HISTORIC NOTE
The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)
site maintained by the Florida
Cooperative Extension Service.
Copyright 2005, Board of Trustees, University
of Florida
X.b
Agricultural Research Center, Ona *
Research Report RC-1982-1 January 1982
1981 CLIMATOLOGICAL REPORT
1/
C. L. Dantzman-
This report gives a summary of the weather data for 1981. It also lists
the extremes in daily temperatures from 1944 and the extremes in daily rainfall
from 1942 to the end of 1981 for the Agricultural Research Center at Ona, Florida.
The station is located 82055' W longitude and 27026' N latitude in southwest
central Florida, approximately 45 miles east of the Gulf of Mexico and 100
miles west of the Atlantic Ocean.
The weather instruments thermometer and hygrothermograph were housed
in a weather box located four feet above ground level. Another thermometer
was housed at ground level to record minimum temperatures at that elevation.
Weather observations were made daily at 9:00 AM, unless otherwise npted, and
cover the period following the previous reading.
Maximum and minimum temperatures and rainfall for each day for 1981 and extremes
for the period 1942 to and including 1981 are listed on pages 4 through
15. A comparison of 1981 rainfall with the 1942-81 average is given on page
16. Temperature frequencies for maximum and minimum values are given on page 17,
and a summary of average maximum and minimum temperat r-by months is presented
on page 18. HU1 L F
Rainfall, 1981 JUL 1 985
I.FP.A ;/
The total rainfall for the year 1981 was 47.09 1 s X 1T i
was 6.44 inches (16.36 cm) below the 1942-81 average of 53.53 inches l3-/cm).
Excess rainfall was recorded for February (2.77 inches or 7.04 cm), March
(0.02 inches 0.05 cm), May (0.49 inches 1.24 cm), and August (7.52 inches
19.10 cm). Deficit rainfall was recorded for January (1.65 inches 4.19 cm), April
(2.28 inches 5.79 cm), June (0.35 inches 0.89 cm), July (6.15 inches 15.62 cm),
September (1.96 inches 4.98 cm), October (3.10 inches 7.87 cm), November (0.76
inches 1.93 cm) and December (0.99 inches 2.51 cm). There were 93 days of
1/ Associate Soils Chemist, Agricultural Research Center, Ona, Florida 33865
Research Report RC-1982--1
measurable rain (0.01 inches or 0.03 cm or greater) during the year. The longest
period without rain was 17 days which ended October 19, 1981.
Temperature, 1981
The highest temperature recorded during 1981 was 98 degrees F (36.7C)
and occurred July 3, 1981. The lowest temperature was 18 degrees F (-3.30C),
measured January 13, 1981. Temperatures below 40 degrees were recorded 45 times:
24 in January, 5 in February, 3 in March, 4 in November and 9 in December. The
last frost of the 1980-81 winter season (36F 2.220C or lower) occurred
March 21, 1981 (35F or 1.67C) and the first frost of the 1981-82 winter
season occurred November 16, 1981 (360F or 2.22C).
1942-1981 Weather Summary
The highest temperature for the period 1944 through 1979 was 103 degrees,
measured May 31, 1945 and June 1, 1945; the lowest temperature during this
period was 18 degrees and was measured January 13, 1981. When minimum temperatures
drop below 600F, the growth decreases for most sub-tropical grasses. The earliest
measurement under 60F in the beginning of the cool season was September 27, 1956.
Temperatures below 60F occurred in October in 33 or 37 years. The latest
measurement of a temperature under 600F at the end of the cool season was
June 15, 1950. This temperature occurred in June in 11 of 37 years.
Ground frost is generally present when the official temperature* is
360F or lower. Over the 1944-1981 period the first frost of the cool season
occurred as early as November (November 4, 1966) to as late as February
(February 20, 1972). The last frost of the cool season has occurred as early as
January (January 14, 1948) to as late as April (April 8, 1950, 1971). The
*Thermometer located in the weather box 4 feet (122 cm) above ground level.
Note; Weather observations were made at 8 AM from June 1, 1942 to August 1,
1957; at 4:30 PM from August 2, 1957 to January 1, 1962; then 9:30 AM until
the present time.
Daily records from July 1952 through June 1953 were missing.
January 1982
Research Report
RC-1982-1
January
1982
average
first day
of frost of
the cool season is
December
3 and
the average
last
of f
rost
February
Frost has
occurred
in November
in 15
years,
December
March in
in 32
or 37
years,
years,
January
and April
years,
years.
in 3
February
25 of 37
years,
January
1981
Temperature ( F)-i
Ground
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2/
Rain-
Inches
0.01
0.01
0.01
0.18
0.20
0.03
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1942-81
Tempera
Maximums
Highest
85
85
84
84
85
85
86
84
84
85
84
85
84
84
85
85
84
86
84
86
85
84
92
86
86
84
86
90
85 5
86
87
Year
1968
1974
1973,74
1967
1947
1973
1947
1947
1974
1974
1974
1974
1975
1972
1947
1947
1947
1947
1949
1947
1959
1962,74
1957
1962
1962
1962,71
1965
1957
j5,59,74
1959
1947
Lowest
59
55
59
48
54
60
56
51
47
46
49
51
47
48
49
47
51
46
49
42
50
57
56
55
59
54
58
56
,75 55
56
43
Year
1949
1949
1958
1979
1956
1980
1980
1970
1970
1970
'1970
1977
1981
1948
1948
1978
1959
1965
1957
1977
1971
1960,61
1946
1966
1963
1968
1968,77
1966,78
1978
1978
1966
Extremes
ture OF)
Inche
Rainf
Minimums
Highest
64
67
68
65
68
68
65
64
65
64
68
64
66
66
66
62
62
60
63
63
65
66
66
69
63
63
67
65
61
65
67
Year
1959
1967
1967
1966
1971
1962
1960
1964
1964
1971
1975
1964
1963,8(
1972
1947
1966
1957
1955
1974
1969
1959
1973
1965
1957
1975
1967
1973
1973
1947
1947
1947
Lowest
Year
1949
1956,
197
1962
197
196
1949
197
195
197
196
1959
198
198
195
1977
195
1977
19e
197
197
197
1961
196
195
19E
195
197
196
1957
195
,56
71,80
9
,79
9
7
Av. 66.0
Range 76
Total
1/ F 32
1.8
Inches
0.20
0.44
= C
x 2.54
= cm.
February
1981
Temperature (OF)-1
Ground
Date
2/
Rain2
Inches
----
0.81
0.02
4.11
0.03
---
0.23
---
0.07
0.02
- --
-- -
---
- -
- -
- -
1942-81 Extremes
Temperature (F)
Maximum
Highest Year Lowest Year
85 57,74,75 55
84 50,56,57,59 54
85 1957 47
86 1949,57 51
86 1956 48
86 1956 52
86 1949,57 54
88 1957 57
88 1949 45
87 1949 43
86 1959 53
87 1959 52
88 1959 59
87 1959 59 1
87 1949 59
88 1949 60
87 1944,75 56
88 1961 51
92 1957 53
90 1961 52
90 1961 58
88 1944,61 58
87 1945 50
89 1962 61
89 1962 52
91 1962 54
89 1971 53
91 1962 59
86 1944 65
- Minimum
Highest
1966
1980
1951
1951
1966
1963
1963
1978
1947
1947
1971
1973
1955
963,5
1971
1958
1958
1958
1958
1978
1964
1956
1978
1973
1968
1967
1974
1963
1964
Year
1957
1973
1957
1959
1960
1965
1961
1975
1959
1962
1981
1954
1960
1965
1969
1959
1981
1981
1956
1975
1945
1961,7
1979
1975,7
1979
1959
1959
1959
1976
Lowest
Rain
Year
1965
1980
1976
1958
1947
1966
1978
1980
1968
1947
1971
1955
1955
1958
1971
1971
1958,77
1977
1969
1958,60
1977
1977
1978
1964
1968
1967
1974
1968
1964
Av.
Range
Total
1/ OF
- 32
4.:
4.11
5.29
= C
Inches
x 2.54
3
2
5
5
4
4I
(
4
(
I
(
(.
= cm.
March
1981
Temperature
1/
(GrouF)nd
Ground
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
2/
Rain-2
Inches
- -
- -
-- a
- -
- -
0.16
- -
- -
- -
- -
- -
- -
- -
0.04
- -
0.17
-- a
- -
- -
- -
-- a
- -
2.36
- -
- -
- -
- -
-- a
-- a
- -
1942-81 Extremes
Temperature (oF)
Maximum
Year Lowest Year
st
Highe
89
87
90
87
88
90
89
88
87
88
88
88
88
90
89
91
89
90
90
90
90
92
88
94
91
91
92
91
91
92
88
1961
1945
1961
45,48,52,62
1961
1961
1961
1950
1974
1974
1948
1968
1948
1956
1945
1945
1945,50
1945
1945
1945
1950,7
1950
1952
1946
1949
1949
1974
1950
1949
1947
1965
1977
1968
1980
1980
1971
960,78
,62,65
1961
1969
1957
1978
1969
1969
1968
1971
.969,70
1954
1959
1959
1981
1956
1965
1963
1968
1968
1977
1969
1955
1955
1966
1950
Minimum
t Year Lowest Year
Highes
65
66
65
68
66
68
67
68
63
68
65
66
67
71
67
67
68
66
67
68
64
68
67
68
68
68
68
69
69
68
73
Av.
Range
Total
1/ OF -32
1.8
2/ Inches x
76.3
85
2.54
51.1
35
2.36
2.73
= cm.
]
1948
1965
1948
1963
1963
1961
1967
1950
958,67
964,67
2,73,8'
1973
1946
1952
1952
1963
1946
.965,80
1965
1951
1944
1957
.944,52
.944,79
1969
1980
1944
1950
1970
1951
1972
3
1956
1968
1980
1980
1971
1960
1954
1962
1971
1950
1961
1949
1959
1948
1958
.947,54
1962
1956
1962
1958
1971
1960
1962
.950,63
1968
1956
1971
1962
1955
1962
1971
*
.1
*
.
.
.
I,
!.
1
i
*
fe
)
n
)
I
I
)
I
*i
..
L
*
.
.
1981
Temperature (/F)
Temperature (0F)
Ground
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
April
2/
Rain-2
Inches
a--
0.03
- -
- -
- -
- -
- -
-- C
-a
- -
- -
- -
-- a
- -
- -
0.03
trace
0.01
1942-81 Extremes
Temperature (F)
Maximum
Highest Year Lowest Year
1974
1974
45,49,56,74,75
1945,74
1950
1945,47
1947,48
46,65,68
1948
1946,75
46,62,75
1965
1945
1945
1945
1945
1945
1945
1944
1944
1944
1944
1968
1945,68
1.945
1945
1945
1945
1968
1949
1950
1980
1958
1944
1951
1966
1950
1970
1950
1972
1973
1973
1951
1951
1959
1950
1952
1954
1950
1961
1962
1962
1954
1959,74
1979
1977
1948,78
1978
1973,80
1965,73
Minimum
Highest Year Lowest Year
1970
1959
1954
1973
1957
1947
1964
1957
1964
1961
1944
1963
1947
1947,80
1947
1944,47
1944
1969
1957
1959
1959
1944,45
1945,47
1971
1971,46
1967
1971,45
1947
1947
1947
1964
1956
1976
1944
1975
1975
1950
1950
1971
1974
1977
1973
1950
1961
1950
1950
1962
1956
1962
1956
1961
1950
1950
1950
1974
1977
1977
1977
1977
1977
Av.
Range
Total
0.03
0.07
1/ F -
1.8
Inches x
2.54
-- cm.
=C C
1981
Temperature (c F)-
Ground
Date
2/
Rain-2
Inches
1942-81 Extremes
Temperature (F)
Maximum
Highest Year Lowest Year
Minimum
Highest
Year
Lowest
Year
trace
- -
- -
- -
-- a
- -
0.07
- -
- -
- -
a--
- -
- -
- -
- -
- -
- -
- -
- -
- -
0.04
- -
- -
- -
- -
- -
4.50
- -
- -
- -
- -
1975
1975
1950
1950
1950
1955
1955
1950,75
1975
1975
1955
1955
1967
1967
1967
1945
1963
1978,81
1944
1963,80
1950
1949
1949
1949
1956,60
1949
1949,63
1962
45,65,66
1945
1945
1969,72
1963,64
1976
1963
1964
1944
1944
1958,60
1960
1960
61,75,77
1977
1977
1960
1976
1951
1973
1973
1979
1979
1972
1976
1958
1976
1970
1981
1979
1972,81
1972
1960
1970
1971
1967
1964
1978
1954,56
1956
1946
1967
1973
51,57,73
1966
1959
1971
1954
1972,76
1981
1981
1946,80
1969
1952
1952,55
1957
1958,55
1958
1947
1958
55,57,69
1959
1959,73
1973
1959
1968
1945
1971
1945
1945
1945
1970
1971
1960
1967
1969
1981
1952
1960
1960
1955
1973
1945
1967
1979
48,49,72,77,
1973,77
1961,72
1971
1967
1979
1979
1967
47,49,72
1971
1971
Av.
Range
Total
4.50
4.61
1/ OF -32
2/ Inche1.8
2/ Inches
= C
x 2.54
= cm.
R
*
I
)
)
)
)
L
L
3
L
L
L
)
2
L
)
L
3
L
L
3
4
1981
June
ertur 1/
TemFerature (oF)-
Ground
Date
2/
Rain-
Inches
1942-81 Extremes
'9 emperature (F).
Maximum
Highest
Year
Lowest
Year
Highest
Minimi
Year
um Re
Lowest
Year
0.92
1.39
0.08
- -
0.62
0.19
- -
- -
0.89
0.05
1.30
0.08
0.03
0.04
1.23
1.22
0.01
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
0.01
1945
1945
1945
1945
1945
1945
1945
1949
1945
1945
1945
45,52,58
1952,77
1951,77
1945
1944,52
1964
1964,81
48,50,58,64
1963
1950
44,48,50,5:2
44,48,50,52
44,48,50,52
1948
1945
1952
1948
1948
1948
1949
1966
1968
1968
1968
1968
1968
1968
1966
1947,6
1976
1965
1948
1963,7
1947
1962
1959
1967
1967
1968
1955
1978
1945
1945
1974
1974
1968
1974
1974
1966
1959
1954,77
1946
1946,81
1954
1981
1957,81
57,66,78,81
1958
1958
1958
1958
1952
1948
1949
1949
1949
1969
1959
1972
1950
1972
1972,54
1944
1945,69
1945
1951,69
1969
1957
1957,54
1971
1962
1965
1955
1945,67
1972
1972
1956
1972
1967
1960
1960
1960
1955
1950
1950
1947,78
1956,78
1956
1956
56,71,74
1974
1947
1965
1956-76
1978
1973,77
1952
1961
1952
a
c
-
I
I
h
,
,
*
.
.
I
I
r
Range 96 67
Total
1/ OF -32 o
~ -- 78-- ~C
1.8
2/ Inches x 2.54
1.39
8.05
= cm.
11
1981 July
Temperature (OF)-/
Ground
Date
2/
Rain-2
Inches
1942-81
Temper
Extremes
ature (0F)
Maximum
Highest Year Lowest Year
Minimum
Highest
Year
Lowest
Year
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
48,50,54,63
48,50,59
1972
1979
1953,69
1969
1979
1980
1944,81
1980
51,61,69,77,80
1951
1944,81
1946,61
57,62,79,81
1955,60
1955
48,58,69,73
1951,58
1960
1960
1960
1960
1961,62
1956,61
1951,61
1956
1956
1968
1961
1961
1966
1974,76
1968
1974
1957,58
1956
1974
1954
1950
1950,68
1963
1956
1975
1973,75
1965,72
1954
1978
1965
1961
1947
1949,70
1967
1966
1945
1945,53
45,54,64
1964
1960
1945
1965
1960
1966
44,51,54
1970
1978
1945,46
1966
1945,80
1953
1954
1945
1965,80
1969
1969,80
1958
1980
1947,48,81
1965
1966
1957
1981
53,57,60
1957,63
1960
1957,62
1962
1962,68
1960
44,45,68
1945
1946
1957,65
56,
44,5
55,5
46,5
1981
1968
67,73
1944
1947
1972
1972
1972
1968
1964,71
6,72,76
1956,76
1956,71
1972
1974,77
1967
1967
1977
1977
1977
1977
1976
1977
1977
1956
56,77,78
1961
35,72,76
1956
1967
1949.64
Av.
Range
92.0
Total
1/ OF-32
1.8
2/ Inches
1.03
2.92
x 2.54
= cm.
1981
Temperature (oF)-
Ground
Date
August
1942-81
Rain-2
Inches
Extremes
Temperature (oF)
Maximums
Highest Year Lowest Year
Minimums
Highest
Year
Lowest
- -
- -
0.03
1.45
0.18
- -
- -
- -
- -
- -
0.09
0.14
2.12
0.25
- -
- -
trace
0.12
4.95
0.40
0.26
0.08
1961
1956,60
1960
1953
1956
54,56,61,72
1967
1977
1963
1981
1961
1956
1961
1963
51,54,61,78,79
1957,79
1957
1980
57,70,75,78
1954
1962
1955,60
50. 55,62,68,80
48,50,51,64,69
1964
1951
1944,49
56,59,67
1980
48,51,61
1955,61
1974
1959
1973
1957
1958
1969
1969
1947
47,50,59
1959
1970
1967
1949
1980
1967,71
1971
48,65,71
1945,48
1981
1981
1949,81
1981
1977
1945
1960
1948,60
48,68,72
1949
1981
1977
1957,72
1948,62
1965
1960
1953,58
45,58,60
45,54,68,60
44,45,53
1965
1953
1968,81
1955
1955
1954
1978
1965
1949
1949
1949
1957
1944,45
1951,69
1945,69
1968,78
1958
1949
1949,70
1951
1954
1959
47,49,51
1945,48
195
196
197
197
1971
197
1973
197
197
195
197
196
197
1976
196
197
196
197
195
197
197
197
195
56,62
196
196
194
194
1958
196
196
Av.
Range
Total
I/F
89.7
95
71.9
69
4.95
15.72
- 32
Inches
= C
x 2.54 =
Ye
cm.
m
1981
Temperature (0F)-/
Ground
Date
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
September
2/
Rain-
Inches
1942-81 Extremes
Temperature (F)
Maximum
Highest Year
0.06
0.98
- -
- -
48
47
47,
50,51
- -
0.36
- -
1.00
trace
- o
- -
0.53
0.09
- -
trace
- -
0.70
trace
-0.05-
- -
- -
0.05
- -
54,57
51
1964
1944,64
1944,51
1945
1948
1948
1948,51
1957
1948
,73,78
,61,62
1945,79
1955
49,51,62
1950,58
1958
1957
.,56,74**
1962
1958
1961
,58,61
,55,58
1954
1951,58
1951,55
1980
1951
),51,74
1958
Lowest
83
80
85
79
82
83
76
82
79
74
82
79
79
80
81
82
83
80
87
80
77
79
84
80
77
81
77
79
80
73
Year
4
1953
1954,59
1960
1945
1950
1950
1950
1971
1971
1971
1971
1966
1968
1968
1946
1945
1947
1947
8,46,56 ,61
1962
1962
1948
47,60,63
1963
1963
1948
1948
1947
1949
1967
Minimum
Year Lowest Year
Highest
74
74
75
74
75
76
75
74
75
76
75
78
75
75
75
74
74
75
74
74
75
74
75
74
76
76
76
74
74
74
1950-81
44,50,51,62
1944,51
1944,48
1944,79
1962
1974
47,51,65,77
45,65,68
1965,78
45,64,73
1979
1974,79
1964
1973
45,54,73
45,54.73,79
1947
1945,78
19 ,
1951,79
47,51,54
1979
53,74,79
1953
1953
1957
51,63,65
1965
1945
Av.
Range !
Total
1/ F
70.1
60
- 32
1.00
5.31
= C
Inches x 2,54 = cm.
Also 1958,9,1971,2.
5
51,66,70,7t
1977
1968
1974
64,67,78
1964,78
1978
1964
0,64,68,72
1958
1980
1956
1969
1956
1968,76
1976
1976
1961
1981
1981
50,75,78
1964,72
1967
1967
1967
1961
1956
1961
1947,62
1962
October
1942-81 Extremes
1981
Temperature
Ground
Date
2/
Rain-
Inches
Temperature
Maximum
Highest Year Lowest Year
(F)
Minimum
Highest
Year
Lowest
Year
0.02
- -
- -
- -
- -
- -
-- a
- -
- -
- -
- -
- -
- -
- -
-- a
- -
1
51,55
0.02
958,59
1958
1959
1962
1959
1955
,62,73
1962
1959
1959
1959
1959
1961
1962
1959
1959
1959
1,66
1960
1972
946,50
951,80
950,51
1950
1981
946,60
1960
1978
1978
1959
1980
1949,
1951
1957,
1948,
1974
1964
1964
1964
1953
1953
1978
1971
1944
1977
1977
1978
1950
1977
1953
1955
1964
1976
1965
1965
1969
1957
1957
1957
1944
1968
1955
1948,69
46,49,53,78,80
1964
62,64,66
1966
1945
1962
1962,73
54,66,75
1971
47,48,54,59
1961
1959
1964
1964
1959
1959
1968
1968
1950
1959
1969
1969
1969
1951
1951,77
1946,81
1972
1949
1949
1949,59
1971
1976
1976:
1974
1974
1979
1964
1978
1948,72
1976
1951
1944
1944
1944
1955
1945
1978
1974
1967,74
1955
1961,64
1961
1961
1944
1958
1968,80
1967-68
1944
1958
1968
1973
Av.
Range
TDtt-
86.1
89
- 32
1.8
Inches
also
64.1
52
0.02
0.04
= OC.
x 2.54
occurred
- cm.
in 1965
1981
Temperature
Ground
Date
November
1942-81
2/
Rain-2
Inches
Maximum
Highest
Year
Lowest
Extremes
Temperature (F)
Minimum
Year
Highest
Year
Lowest
Year
- -
0.26
- -
0.05
0.20
0.02
- -
- -
- -
- -
0.28
0.02
- -
- -
- -
0.21
- -
- -
trace
- -
0.01
trace
- -
- -
- -
- -
- -
1971
1961
1962
1972
1959
1959
1961
1957,78
1946
46,75,77,78
1961
1961
1949
1948,72
1944,57
1957
1957
47,48,60
1948,58
1948,74
1948,62
1948,73
1948,73
1958
1946,64
1946
1948
1948
1973
1968
1965
1953
1963
1966
1970
1950
1953
1959
1950
1956
1953
1953
1968
1968
1975
1969
1970
1970
1951
1951
1968
1944
1945,7
1945
1970
1970
1950
1947,56
1959,80
1955
1960
1971
1979
1950,75
1981
1958
1972
1972
1949
1980
1979
1979
1979
1947,72
1980
1951
1980
1947
1948
1946,4E
1948
1947
47,48,53
1953
1957
1979
1948
1948
1964
1972
1954
1957
1954
1966
1969,7'
1950
1967
1951
1976
1961
1956
1956,62
1968
1968
1969
1969
1970
1970
1951
1968
1968
1981
1956,8
1956,7
1970
1950
1962
1956
1966
1959
Av.
Range
Total
1/ OF
32 0.28
1.05
- 32
Inches
x 2.54
= cm.
= C
1981
December
Temperature (F)
Ground
Min
Date
2/
Rain-2
Inches
- -
trace
0.40
- -
- -
- -
- -
trace
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
- -
0.17
- -
trace
- -
-if
1942-81 Extremes
Temperature ( (F)
Highest
Maximum
Year
Lowest
1978
1977
1968
1978
1964,78
1972
1972
1978
1978
1960
1971
1947,48
1961
1956
1956
1961
48,56,59
1956
1946,67
1946,67
1956
1948
1970
1944
1970
1962
1962
1962
1960
1946,70
1951
Year
Highest
1976
1976
1976
1974
1945
1945
1962
1962
1973
1954
1962
1973
1962
1962
1962
1968
1968
1973
1953
945,50
1954
1977
1975
1976
1963
1963
1977
1977
1980
1980
1948
Minimum
Year
1977
1977
1958,78
1964
1978
1977
1979
1972
1972
53,67,71
1967
1976
1953
1972
1972
1965
1977
1961
1961
1946
1951
1951
1971
1947
1951
1964
1951
1949
1949
1949,45
1949
Lowest
Year
1966
1966
,69,74
1974
1974
1963
1977
1959-7
1968
1974
1962
1957
1962
1962
1962
1968
1960,6
1973
1950
1958
1954
1973
1973
1973
1966
1961
1977
1977
1961-8
1961
1948,8
AV. 73.4
Range 86
Total
1/ 0F 32
1.8
Inches
x 2.54
0.40
0.85
= cm.
1981
Frequency
of Maximum
1/
Temperatures-
, days
June
July
Aug
22
8
1
-gl -a
- -~
Sept
Total
Total
1981
Frequency
of Minimum
1/
Temperatures -
, days
(F) Jan Feb Max Apr May June July Aug Sept Oct Nov Dec Total (F)
Summary of Temperature Records; by Months.
1981 Av. 1944-81 1981
Av. Av. Av. Av. Extremes
Max. Min. Mean Max. Min. Mean High Low'
66.0
74.6
76.3
84.6
87.8
91.7
92.0
89.7
88.9
86.1
77.7
34.5
49.5
51.1
58.6
60.7
70.3
70.9
71.9
70.1
64.1
50.7
50.3
62.1
63.7
71.6
74.3
81.0
81.5
80.8
79.5
75.1
64.2
72.9
74.6
79.4
83.9
88.0
90.3
90.7
90.6
89.2
85.0
78.9
48.7
49.8
54.2
58.3
63.1
68.6
70.9
71.5
70.8
64.4
55.8
60.8
62.2
66.8
71.1
75.6
79.5
80.8
81.1
80.0
74.7
67.4
1944-81
Extremes
High Low
1981
Extreme
ground
surface min.
Avg. Extremes
29.2
42.0
45.0
55.2
57.9
71.1
71.5
69.3
70.3
59.8
51.4
73.4 47.5 60.5 74.6 50.2 62.4
Month
Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
Sept.
Oct.
Nov.
Dec.
86 24 88 20 48.2 24
18.
Inches- of rainfall at ARC, Ona for 1981 compared with average for 1943-80.
By months
1943-81------
9 T
1981---------
Accumulative by months
1943-81------- 1981-----------
Days
yrea "of
AV 1981 Excess Deficit Rain
39 year
AV
Days*
of
1981 Excess Deficit Rain
1.65 6
2.77 -- 7
0.02 -- 4
-- 2.28 3
0.49 -- 3
-- 0.35 14
-- 6.15 11
7.52 --- 17
-- 1.96 14
3.10 2
0.76 8
0.99 4
Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
Sept.
Oct.
Nov.
Dec.
Total
2.09
4.61
7.32
9.67
13.79
22.19
31.27
39.47
46.74
49.88
51.69
53.53
0.44
5.73
8.46
8.53
13.14
21.19
24.12
39.84
45.15
45.19
46.24
47.09
1.22
1.14
0.37
1.65 6
-- 13
-- 17
1.14 20
0.65 23
1.00 37
7.15 48
-- 65
1.59 79
4.69 81
5.45 89
6.44 93
2.09
2.52
2.71
2.35
4.12
8.40
9.08
8.20
7.27
3.14
1.81
1.84
53.53
*0.01 or more inches of rainfall.
1/ Inches x 2.54 = cm.
0.44
5.29
2.73
0.07
4.61
8.05
2.93
15.72
5.31
0.04
1.05
0.85
47.09
0.00 6.44
10.80 17.24
-------- ~---L
"
Jf.
|