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
,) Agricultural Research Center, Ona *
Research Report RC-1975-1 January 1975
^- /
1974 CLIMATOLOGICAL REPORT
1/
C. L. Dantzman-
The 1974 weather data for the Agricultural Research Center, Ona
Florida is summarized in this report. Daily temperatures and rainfall
for each month is listed on pages 2 through 13. The weather box con-
taining the standard thermometers and hygrothermograph is four feet
above ground level. Weather observations were at 9:30 a.m. unless noted,
and covered the previous 24 hour period. The ground thermometer rested
on the soil surface. The ground-level minimums are the lowest temper-
atures for the period following the previous reading.
Rainfall is compared with the 1942-1973 averages on page 14.
Frequency range of daily maximum and minimum temperatures by months
is shown on page 15. A summary of the temperature averages and extremes,
is given on page 15, and rainfall extremes on page 17.
Rainfall
1974 total rainfall at the Agricultural Research Center, Ona was
50.80 inches. This was 3.84 inchgibelow the 32 year average (1942-1973)
of 54.64. The months that showe '' follows: Deficits January
1.96 in., March 2.85 in., April .87A' y 1.02 in., July 2.34 in.,
September 1.51 in., October l.7l in., 6tme -e.48 in.; Excesses:
February 0.17 in., June 6.92 in., August 2.q r. d December 1.08 in.
There were 129 days of measurable rb~fp(0.01 i f~ ore) for the
year. The longest period of drought was06 days e n on March 13.
Temperature 6
The highest temperature for t ywas 94 d agrees, which was
measured for May 31, June 1 and July 2.ti) lowe t, 26 degrees,
occurred on December 10. Temperatures of Wn ees or lower were
recorded 20 times: 9 in February; 1 in March; in April; 2 in
November; and 6 in December.
1/ Assistant Soils Chemist, Agricultural Research Center, Ona, Florida.
/ **
-2-
JANUARY 1974
Temperature (OF)
Mean
71.0
71.5
71.0
71.5
71.0
68.0
69.0
69.5
73.0
71.0
72.5
72.0
70.5
70.5
70.0
70.0
67.0
62.5
71.0
67.0
71.0
70.5
69.5
68.5
69.5
69.0
70.0
71.0
70.5
69.5
72.5
70.1
Ground
min.
54
55
55
58
56
52
54
53
58
54
57
54:
56
58
56
56
49
50
52
53
59
54
53
51
54
51
55
55
52
54
56.
54.3
Rainfall
Inches
trace
trace
trace
0.00
0.02
0.00
trace
trace
trace
0.00
trace
0.00
trace
trace
0.00
0.00
0.00
0.03
trace
0.00
0.00
0.05
trace
0.00
0.00
0.00
0.00
0.00
trace
0.00
0.01
0.11 (total)
53 49
Date
Max
Min
57.7
82.4
Range 85
FEBRUARY 1974
Temperature (F)
Meen
72.5
69.0
70.5
71.5
54.5
60.5
70.0
74.0
67.5
45.0
47.5
49.5
53.0
59.0
.62.0
69.5
62.5
53.5
64.5
: 64.5
68.0
75.0
61.5
59.0
62.5
46.5
41.5
56.0
61.1
Ground
min.
43.2
2.73 (total)
30 26
Date
Max
Min
Rainfall
Inches
85
83
84
85
72
75
81
83
83
56
61
68
72
77
79
83
75
69
76
81
79
86
83
73
75
63
53
70
trace
0.00
trace
0.00
0.00
0.00
0.00
0.00
0.38
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.82
trace
0.00
1.50
trace
0.00
0.02
0.01
0.00
0.00
0.00
0.00
75.4
46.8
--- -- -------------------- --
Range 86
-4-
MARCH 1974
Temperature (*F)
Mean
43
45
49
49
55
53
51
61
59
55
55
57
61
52
59
63
57
37
42
54
56
67
63
68
62
65
67
65
63
62
50
58.5
61.0
64.0
65.0
68.0
69.0
68.0
74.5
73.0
71.5
71.0
71.5
72.5
68.0
70.5
70.5
69.0
56.0
61.0
69.0
72.0
78.0
71.5
73.0
74.0
77.5
79.5
77.0
75.0
74.5
67.5
70.1
37 34
Date
Max
Min
Ground
min.
Rainfall
Inches
0.24 (total)
0.00
0.00
0.00
0.00
0.00
0.00
0.00
trace
trace
0.00
0.00
trace
0.01
0.00
0.00
trace
0.00
trace
0.00
trace
trace
0.00
0.10
0.11
0.01
0.00
0.00
trace
0.01
0.00
0.00
83.8
56.3
53.0
---
- -- ----`-----
Range 92
APRIL 1973
Temperature ("F)
Min
54.9
Mean
71.5
77.5
78.5
78.0
79.5
64.0
55.0
60.5
72.0
59.0
68.5
74.0
75.5
75.0
77.5
73.5
75.5
66.0
68.0
69.0
68.5
71.0
74.0
70.0
66.5
66.5
65.5
66.0
69.5
68.5
70.1
Ground
min.
50
57
62
62
66
45
34
39
61
36
50
60
60
54
61
54
60
48
48
45
48
52
57
59
42
46
44
43
47
48
51.3
Rainfall
Inches
trace
trace
0.00
0.00
0.00
0.44
0.01
0.00
0.12
0.00
0.00
0.00
0.00
trace
0.03
trace
0.02
0.00
0.00
0.00
0.00
0.00
0.00
0.10
0.00
0.00
0.00
0.00
0.00
0.00
0.72 (total)
40 34
Date
Max
85.3
- --
Range 93
Temperature (F)
Ground
min.
70.5
70.5
70.5
70.0
76.5
74.5
73.5
69.0
69.5
78.0
80.5
81.0
74.0
78.5
75.5
75.5
79.0
76.0
78.0
77.5
79.5
79.5
78.5
76.0
78.5
78.0
78.0
77.0
79.5
76.5
79.5
76.1
2.82 (total)
51 48
-6-
MAY 1974
Date
Max
Rainfall
Inches
Min
62.6
Mean
59.7
trace
0.00
0.00
0.00
0.00
0.00
0.02
0.00
0.00
0.00
0.00
0.00
0.00
0.00
2.30
0.05
0.30
0.00
trace
0.00
0.00
0.00
0.00
0.15
0.00
0.00
trace
trace
0.00
0.00
0.00
89.5
Range 94
.Temperature (OF)
Ground
min.
79.5
76.0
79.0
76.0
75.5
78.0
80.0
81.0
80.0
78.0
80.0
79.5
77.0
80.0
81.0
72.5
78.5
79.0
78.5
81.0
79.0
78.0
82.0
77.0
74.5
75.5
78.0
73.5
74.0
77.5
78.0
15.22 (total)
63 60
JUNE 1974
Date
Max
Rainfall
Inches
Min
67.3
Mean
64.6
0.05
0.00
0.34
0.18
0.00
0.23
0.30
0.00
0.00
0.00
2.36
0.03
0.00
0.00
0.02
0.45
0.10
0.00
0.00
0.00
trace
0.04
0.02
1.40
2.05
0.32
2.42
2.66
0.15
2.10
88.6
----
--
Range 94
Temperature (O.F)
Ground
min.
78.5
77.0
76.5
77.0
77.5
78.0
77.0
79.5
81.0
82.0
81.5
82.0
79.0
77.5
77.5
79.5
80.0
78.5
80.0
84.0
81.0
79.0
80.0
81.0
81.0
80.0
81.0
80.5
79.5
80.5
80.0
79.6
7.30 (total)
67 60
JULY 1974
Date
Max
Rainfall
Inches
Min
70.2
Mean
66.9
0.02
0.42
0.15
0.86
0.26
0.85
0.32
0.03
0.00
0.05
0.00
0.00
0.23
0.01
0.00
0.00
0.03
0.25
0.17
trace
0.00
0.00
1.18
0.00
0.00
0.01
0.00
1.06
0.73
0.63
0.04
88.9
--
Range 94
AUGUST 1974
.Temperature (OF)
Mean
77.0
79.0
78.5
79.5
78.0
78.0
81.0
80.5
82.5
83.5
81.5
82.0
80.5
80.0
82.0
83.0
82.5
81.5
80.5
81.0
81.0
81.0
81.0
81.0
82.0
82.0
82.5
82.0
81.0
81.5
81.5
80.9
Ground
min.
69..7
10.80 (total)
69 59
Date
Max
Rainfall
Inches
Min
71.7
0.61
0.46
0.57
0.01
1.10
0.27
0.21
0.24
trace
0.01
0.01
4.00
0.83
trace
trace
0.01
trace
0.30
0.48
0.15
0.56
0.24
trace
0.00
0.00
0.04
0.04
trace
0.00
0.66
0.00
90.1
Range 93
-10-
SEPTEMBER 1974
Temperature (OF)
Mean
82.0
81.5
80.5
79.0
81.0
77.5
81.5
83.5
79.0
80.0
81.5
83.0
83.5
81.5
81.5
81.5
83.0
82.0
82.0
83.0
82.5
80.5
81.0
82.0
82.0
81.0
83.0
81.5
82.0
82.0
81.5
6.19 (total)
67 65
Date
Max
Ground
min,
Rainfall
Inches
Min
72.0
0.00
0.00
0.00
1.62
0.12
0.93
0.00
0.05
0.63
trace
trace
0.49
trace
0.00
1.11
0.31
0.06
trace
trace
0.81
0.01
trace
trace
0.01
trace
0.00
0.01
0.03
0.00
trace
91.0
69.1
---I- -- -- ---~ I~-~-~-- ~-`------ -----
-
Range 93
-11-
OCTOBER 1974
Temperature (*F) Ran fall
Ground
Date Max Min Mean rain. Inches
1 88 67 77.5 64 1.28
2 83 63 73.0 60 0.00
C 84 63 73.5 60 0.00
4 79 55 67.0 52 0.00
5 79 58 68.5 55 0.00
6 84 66 75.0 62 0.02
7 81 67 74.0 64 0.02
8 79 70 74.5 67 trace
9 84 63 73.5 60 0.00 :
10 86 63 74.5 60 trace
11 83 62 72.5 60 0.00
12 85 64 74.5 60 0.00
13 85 63 74.0 59 0.00
14 87 63 75.0 60 trace
15 86 65 75.5 62 trace
16 90 67 78.5 64 trace
17 89 68 78.5 65 0.12
18 79 51 65.0 48 0.07
19 79 52 65.5 48 0.01
20 82 57 69.5 53 0.00
21 80 57 68.5 66 0.00
22 80 51 65.5 64 0.00
23 77 59 68.0 56 0.00
24 80 58 69.0 64 0.00
25 81 58 69.5 54 0.00
26 82 59 70.5 54 trace
27 83 57 70.0 52 trace
28 84 58 71.0 54 trace
29 84 60 72.0 56 trace
30 85 62 73.5 56 trace
31 86 61 73.5 56 0.01
Av 83.0 60.9 72.0 58.6 1.53 (total)
51 48
--~------C-----l_--~-----L____ -~LI-----~-
Range 90
-12-
NOVEMBER 1974
Temperature C(F)
Mean
74.0
73.0
72.0
70.5
72.0
66.5
68.5
68.5
69.0
66.0
64.0
66.0
56.5
58.0
70.5
70.0
72.0
73.5
73.0
74.0
66.0
56.0
57.0
62.0
67.0
69.5
66.0
62.0
60.5
66.5
67.0
0.31 (total)
39 34
Date
Max
Ground
min.
Rainfall
Inches
Min
54.5
trace
trace
0.01
trace
trace
trace.
0.00
0.00
0.00
0.00
trace
trace
0.00
0.00
0.03
0.01
0.00
trace
0.01
trace
0.07
trace
trace
trace
0.00
0.00
0.12
trace
0.00
0.06
79.5
50.7
Range 86
-13-
DECEMBER 1974
Temperature (OF) Rainfall
Ground
Date Max Min Mean min. Inches
1 70 60 65.0 55 0.09
2 66 43 54.5 40 0.01
3 62 40 51.0 36 0.00
4 63 32 47.5 28 0.01
5 66 33 49.5 28 trace
6 63 42 52.5 37 trace
7 75 48 61.5 43 trace
8 79 50 64.5 46 0.00
9 74 45 59.5 41 0.01
10 62 26 44.0 24 0.01
11 67 41 54.0 35 0.00
12 .75 48 61.5 44 trace
13 81 59 70.0 56 0.01
14 78 59 68.5 56 0.00
15 72 60 66.0 56 0.03
16 72 64 68.0 60 0.96
17 69 51 60.0 49 1.61
18 67 36 51.5 32 0.01
19 60 38 49.0 34 trace
20 70 54 62.0 50 0.00
21 83 60 71.5 56 0.01
22 71 51 61.0 47 0.01
23 72 49 60.5 45 trace
24 79 58 68.5 54 0.00
25 82 56 69.0 52 0.00
26 83 60 71.5 56 0.02
27 72 58 65.0 55 0.01
28 81 55 68.0 51 0.00
29 81 53 67.0 49 0.02
30 81 56 68.5 52 trace
31 82 56 69.0 52 0.01
Av 72.8 49.7 61.3 45.8 2.83 (total)
26 24
Range 83
Inches
for 1974
Rainfall
at Agricultural Research
compared with
average
for 194
Center
-1973.
By months
Accumulative by months
32 yr
1974
Excess
Deficit
1974
Excess
Jan.
Feb.
Mar.
Apr.
May
June
July
Aug.
Sept.
Oct.
2.07
0.11
0.17
3.09
3.84
8.30
9.64
Nov.
0.24
0.72
1.96
2.07
4.63
7.72
0.11
3.08
6.62
22.4
7.30
10.80
6.19
1.53
0.31
2.34
1.51
1.71
1. *:
32.09
40.16
47.66
52.89
50. 0
Total
50.80
10.90
14.74
54.64
50.80
-15-
Frequency of Maximum Temperatures, days.
(oF) Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Total
91-100 1 7 9 17 9 16 21 80
81-90 27 11 22 17 22 10 22 15 9 22 15 8 200
71-80 4 10 8 5 3 9 14 11 64
61-70 5 1 1 11 18
51-(0 2 1 3
41-50
Total 31 28 31 30 31 30 31 31 30 31 30 31 365
Frequency of Minimum Temperatures, days.
(OF) Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. Total
71-80
61-70 16
51-60 15
41-50
40
1 5 13 27 25
2 16 9 23 25 18 4 5
8 12 13 7
9 2 6
1 2
1 1
71
17 9 1 145
14 11 16 96
8 8 33
1 1 5
1 1
1 2
2
1 1
3
1 1
1 1
1 1
Total 31 28 31 30 31 30 31 31 30
31 30 31 365
Summary
of Temperature Records
by Months
1944-
1974
1974
1944
-1973
Extremes
Month
Mean
Mean
High
Year
Year
Jan.
Feb.
Mar.
April
June
July
Aug.
Sept.
Oct.
73.5
61.4
62.6
1947
75.4
61.1
56.3
83.8
88.2
90.3
90.7
90.9
72.5
71.0
85.1
79.5
80.9
75.2
55.6
50.3
89.5
88.6
88.9
83.0
72.8
1946
1945
1945
1971
19713
1950
78.0
60.9
67.0
61.3
1967
19621/
1959
1961 /
1944
685/
62
1951
1970
1962
Also occurred
Also
Also
Also
occurred
occurred
occurred
occurred
in 1944,
in*1959.
in 1947.
in 1967.
in 1952.
1954
and 1955.
II IIII imumul mrmm I pmpumumWI Iamm m m l-- ml m m Ii in I ii II
I____ I__ I|_ HI I Im | I el__ a_ __- ) I_ li
_ ,___ I__ I .. .. _.
4 .
-17-
Rainfall Extremes (in.)
Greatest Day
2.15
2.94
3.18
4.70
3.59
11.23
.442
4.90
5..10
'3;2 .5
3.74,.
2.95
1958
1960
1958
1951
1968
1945
1948
1943
1962
.,.1951
. 1953
1957
Greatest Month
8.45
5.52
8.60
7.44
10.58
16.20
19.74
14.26
16.38
7.92
5.44
6.05
1958
1960
1959
1954
1943
1962
1960
1949
1960
1959
1953
1957
Lowest Month
0.03
0.13
0.13
0.00
0.00
2.79
4.11
3.13
1.33
0.19
0.07
0.16
1950
1949
1945
1967
1953
1956
1972
1954
1958
1942
1960
1949
Greatest Year (1953), 73.83
Month
Jan.
Feb.
March
April
May
June
July
Aug.
Sept.
Oct.
Nov.
Dec.
_ _________ ~_I__
Lowest Year (1956), 36.63
|