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site maintained by the Florida
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Copyright 2005, Board of Trustees, University
of Florida
\00
*
Sch Center, Ona *
HU sa hemteRC 1974-1 January 1974.
APR 1 1974 1973 CLIMATOLOGICAL REPORT
C. L. Dantzmanl/
I.F.A.S. Univ. of Florida
The 1973 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 hygrotherlpgraph 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 1942-1972 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 16.
Rainfall
1973 total rainfall at the Agricultural Research Center, Ona was
54.67 inches. This was 0.02 inches below the 31 year average (1942-1972)
of 54.69. The months that showed the greatest percentage of deviation
from the average are as follows: Deficits May 64%, November 88%;
Excesses = January 229% and July 58%. There weV 121 days of measurable
rain (0.01 inches or more) for the year. The longest period of drought
was 17 days ending on April 27.
Temperature
The highest temperature for the year was 95 degrees, which was
measured for June 10; the lowest, 28 degrees, occurred on December 23.
Temperatures of 40 degrees or lower were recorded 19 times: 5 in January;
4 in February; 1 in November and 9 in December.
1/ Assistant Soils Chemist, Agricultural Research Center, Ona, Florida.
JANUARY 1973
I ..
Temperature (Or)
Max Min
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
Av.
79 57
82 58
84 66
83 62
83 62
85 58
80 56
82 54
82 49
54 47
58 50
59 46
.50 36
55. 32
62 36
67 47
72 52
78 52
82 54
79 52
76 52
78 66
74 59
63 55
71 49
74 57
80 67
78 65
79 52
57 .35
60 40 -
72.5 52.4
68.0
70.0
72.0
72.5
72.5
71.5
68.0
68.0
65.5
50.5
54.0
52.5
43.0
43.5
49.0
57.0
62.0
65.0
68.0
65.5
64.0
72.0
66.5
59.0
60.0
65.5
73.5
71.5
65.5
46.0
50.0
62.4
49.8
53
56
64
60
60
56
54
52
48
45
48
44
33
29
33
46
48
50
51
50
48
63
57
54
46
53
63
62
50
33.
37
6.35 (total)
Range 85 32
Date
Mean
Ground
min.
Rainfall
Inches
0.00
0.00
0.00
0.00
0.00
0.00
0.01
0.00
0.07
0.34
1.67
0.05
0.01
0.00
0.00.
0.00
0.00
0.00
0.00
.0.00
0.00
1.82
1.28
0.00
.0.00'
0.32
0.01
0.77
0.00
*0.00
FEBRUARY 1973
_Temperature (F)
Mean
69.0 46.5
64.0
72.5
67.0
52.5
54.5
59.0
58.0
59.0
67.0
63.5
43.5
43.0
56.5
63.0
69.5
58.0
49.5
48.5
51.0
53.5
54.0
52.0
54.0
53.5
61.0
68.0
65.0
56.0
57.7
0.00
0.00
0.30
0.01
0.00
0.00
0.00
0.00
0.00
0.84
0.00
0.00
0.00
0.00
1.02
0.00
0.00
0.06
0.28
0.00
0.00
0.00
0.00
0.01
0.00
0.00
0.00
0.00
43.7
2.52 (total)
Range 82 33
Date
1Max
Min
Ground
Min
Rainfall
Inches
-4-
MARCH 1973
Temperature (IF) Rainfall
Ground
Date Max Min Mean min Inches
1 77 49 63.0 47 0.00
2 78 53 65.5 50 0.00
3 80 55 67.5 52 0.00
4 82 59 70.5 55 0.00
5 84 58 71.0 55 0.00
6 83 62 72.5 60 0.00
7 86 62 74.0 60 0.00
8 86 67 76.5 65 0.07
9 84 65 74.5 63. 0.18
10 78 63 70.5 60 0.02
11 86 65 75.5 62 0.01
12 85 66 75.5 66 0.00
13 87 65 .76.0 62 0.00
14 87 64 75.5 61 0.00
15 87 64 75.5 61 0.00
16 86 64 75.0 62 0.00
17 87 60 73.5 58 0.23
18 66 46 56.0 44 0.00
19 70 44 57.0 42 0.00
20 79 48 63.5 46 0.00
21 82 63 72.5 61 0.18
22 81 46 65.0 44 0.00
23 75 50 62.5 47 0.00
24 75 50 62.5 47 0.00
25 76 57 66.5 54 0.00
26 82 63 72.5 61 1.87
27 75 56 65.5 54 0.00
28 71 52 61.5 50 0.00
29 79 60 69.5 57 0.00
30 78 63 70.5 61 0.00
31 83 65 74.0 61 0.00
Av 80.5 58.2 69.3 55.7 2.56 (total)
Range 87 44
-5-
APRIL 1973
,Temperature ('F) Rainfall
Ground
Date Max Min Mean min Inches
1 86 67 76.5 66 0.00
2 78 60 69.0 57 0.41
3 79 65 72.0 63 0.00
4 84 70 77.0 68 0.00
5 77 55 66.0 53 0.48
6 72 52 62.0 49 0.00
7 79 63 71.0 60 0.00
8 87 65 76.0 63 1.65
,9 80 52 66.0 50 0.01
10 76 55 65.5 52 0.00
11 68 47 57.5 44 0.00
12 69 44 56.5 42 0.00
13 77 47 62.0 45 0.00
14 80 52 66.0 49 0.00
15. 81 60 70.5 56 0.00
16 78 54 66.0 51 0.00
17 82 60 71.0 56 0.00
18 81 58 69.5 54 0.00
19 81 59 70.0 57 0.00
20 82 59 70.5 55 0.00
21 85 62 73.5 58 0.00
22 82 59 70.5 55 0.00
23 83 59 71.0 56 0.00
24 85 59 72.0 55 0.00
25 83 61 72.0 58 0.00
26 85 63 74.0 61 0.00
27 87 64 75.5 63 0.68
28 82 51 66.5 48 0.00
29 73 47 60.0 43 0.00
30 78 52 65.0 50 0.00
Av 80.0 57.4 68.7 54.5 3.23 (total)
Range 87 44 42
L"
MAY 1973
Temperature (OF)
Min
Mean
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
87.3 62.3
68.0
69.5
73.0
75.0
76.5
71.5
70.5
76.5
81.0
77.5
73.0
75.0
77.5
78.0
72.0
73.0
61.0
66.5
70.5
72.0
73.5
72.0
75.5
78.5
79.5
79.0
79.5
81.5
81.5
83.0
78.0
74.8
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.46
0.01
0.00
0.00
0.00
0.41
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.02
0.00
0.00
0.00
0.00
0.52
1.42 (total)
58.7
94 46 44
Date
Max
Ground
min
Rainfall
Inches
- --
Range
JUNE 1973
Temperature ("F)
Min
Mean
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
93
92
92
91
90
94
93
87
88
95
89
89
92
91
90
..92
92
92
87
89
89
88
86
86
89
88
90
89
91
91
90.2 68.6
95 64
Range
79.4
65.6
6.70 (total)
Date
Max
64
67
68
68
68
69
66
70
67
69
70
69
72
70
69
70
69
71
69
66
70
70
70
69
69
67
64
70
69
68
78.5
79.5
80.0.
79.5
79.0
81.5 .
79.5
78.5
77.5
82.0
79,5
79.0
82.0
80.5
7S..5
81.0
80.5
81.5
78.0
77.5
79.5
79.0
78.0
77.5
79.0
77.5
77.0
79.5
80.0
79.5
Ground
min
62
64
65
64
65
66
62
68
65
67
67
S66
70
67
66
67
65
68
66
64
67
67
66
66
66
64
62
67
66
64
Rainfall
Inches
0.17
0.02
0.00
0.00
0.00
0.00
0.00
0.10
0.02
0.33
0.05
0.00
0.00
0.18
0.02
0.00
0.00
0.03
0.45
0.07
1.35
1.09
0.00
2.32
0.00
0.00
0.50
0.00
0.00
0.00
---
JULY 1973
Temperature (OF)
Min
Mean
68
69
67
69
67
69
70
70
67
69
69
71
72
72
74
70
71
71
70
70
70
70
72
73
72
73
71
73
73
74
74
90.3 70.6
94 67
80.5
81.0
78.5
80.0
79.0
79.0
81.0
81.0
79.0
79.5
79.0
81.0
81.5
78.5
81.5
80.0
82.0
82.5
81.0
79.5
80.0
80.5
77.5
82.5
82.0
82.5
81.5
80.0
81.0
81.0
81.0
80.4
0.00
0.67
0.08
0.00
0.00
0.00
1.57
0.35
1.73
0.38
0.00
0.00
1.18
0.08
0.90
0.01
0.11
0.12
3.00
0.97
0.03
0.01
0.02
0.00
0.00
0.00
2.87
0.12
0.00
0.00
0.79
68.4
14.99 (total)
Date
Max
Ground
min
Rainfall
Inches
Av
Range
- -
- --
AUGUST 1973
Temperature (F) Rainfall
Ground
Date Max Min Mean min Inches
1 89 73 81.0 70 0.49
2 85 72 78.5 70 0.91
3 84 72 78.0 69 0.48
4 89 72 80.5 69 0.00
5 92 73 82.5 70 0.00
6 90 73 81.5 70 0.00
7 92 67 79.5 65 0.00
8 91 71 81.0 69 0.00
9 91 72 81.5 70 0.02
10 90 70 80.0 68' 0.00
11 90 70 80.0 68' 0.16
12 92 70 81.0 68 0.03
13 93 70 81.5 68 0.00
14 92 71 81.5 70 0.00
15 92 69 80.5 68 0.43
16* 91 70 80.5 66 1.42
17 91 69 80.0 67 0.00
18 92 73 82.5 70 0.00
19 92 73 82.5 70 0.00
20 92 73 82.5 70 0.39
21 91 70 80.5 68 1.93
-22- 89 66 77.5 63 0.00
23 89 68 78.5 66 0.14
24 89 70 79.5 68 0.00
25 90 72 81.0 69 0.00
26* 91 71 81.0 68 0.01
27 91 71 81.0 68 0.15
28 92 73 82.5 70 0.04
29 92 73 82.5 70 0.00
30 89 72 80.5 69 0.00
31 91 73 82.0 70 0.00
Av 90.5 71.0 80.7 68.5 6.56 (total)
Range 93 66 63
* reading taken at 7:00 a.m.
** reading taken at 7:30 a.m.
-10-
SEPTEMBER 1973
Mean
89.7 71.9
94 69
Range
77.5
80.5
78.5
80.0
80.0
80.5
81.5
81.0
82.0
85.0
83.0
79.0
81.0
82.5
84.0
83.0
83.0
81.5
82.0
80.0
80.0
80.0
79.5
78.5
79.0
80.5
81.0
80.0
79.0
80.5
80.8
1.05
0.01
0.41
0.17
0.55
0.01
0.00
0.00
0.00
0.13
0.14
0.98
0.53
0.00
0.00
0.00
0.00
0.00
0.00
0.21
0.00
0.00
0.89
0.11
0.77
0.00
1.08
0.00
0.00
0.00
71.5
7.04 (total)
Date
Temperature (F)
Max
Min
Ground
min
Rainfall
Inches
- --
-
-11-
OCTOBER 1973
______ Tepnorsture (OF)
Max Min
Mean
89
90
88
90
87
89
91
89
87
88
88
88
87
85
86
87
88
86
86
82
84
88
88
83
80
81
82
85
84
75
74
85.6 64.4
91 45
78.0
78.5
79.5
80.5
78.5
80.0
81.0
81.0
77.5
78.5
78.0
77.5
75.0
74.5
75.0
75.5
76.0
77.0
77.0
75.0
77.0
79.0
77.5
72.5
67.0
66.5
68.0
72.5
72.0
60.0
60.0
75.0
0.00
0.00
0.00
0.00
0.03
0.00
0.01
0.00
0.01
0.26
0.00
0.03
0.00
0.00
0.01
0.00
0.00
0.00
0.04
0.00
0.00
0.00
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.01
61.4
0.41 (total)
* reading taken at 8:00 a.m.
Date
Ground
min
Rainfall
Inches
Range
-12-
NOVEMBER 1973
Tempera ture. ("I)
Max Min
Mean
82.7 58.2
88 38
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
65.5
69.5
73.5
73.0
75.0
75.0
72.0
70.5
70.5
73.0
65.0
63.5
66.5
67.0
66.5
69.0
71.0
72.5
73.0
74.0
74.5
74.5
75.0
75.5
71.5
71.5
74.0
74.0
67.0
50.0
70.4
55.0
0.97 (total)
* reading taken at 7:30 a.m.
** reading taken at 11:30 a.m.
*** reading taken at 7:00 a.m.
Date
Ground
min
Rainfall
Inches
0.40
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.44
0.00
0.11
0.00
0.00
0.00
0.00
0.01
0.00
0.00
0.00
0.00
0.01
0.00
Range
- ---- -- ----
-13-
DECEMBER 1973
Temperature (F)
Min
72.0 48.4
84 28
* reading taken at 7:15 a.m.
** reading taken at 7:00 a.m.
*** reading taken at 7:30 a.m.
Date
Max
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
Mean
63.5
63.0
65.5
66.0
72.0
70,0
6.'. 5
60.0
51.5
48.5
49.5
42.5
46.5
64.0
61.5
67.0
57.5
42.0
50.5
66.5
63.0
45.0
43.0
50.5
67.5
69.5
73.0
73.0
70.0
70.0
69.5
60.2
Ground
min
45.1
Rainfall
Inches
0.00
0.00
0.00
0.00
0.00
0.00
0.21
0.09
0.20
0.00
0.00
0.00
0.00
0.00
0.15
0.00
0.99
0.00
0.00
0.00
0.26
0.00
0.00
0.01
0.00
0.00
0.00
0.00
0.00
0.00
0.01
1.92
Range
- ___
Inches
Rainfall
1973
at Agricultural Research
compared with average
1942-
Center
1972.
By months
Accumulative by months
1973
Excess
Deficit
1973
Exces s
Defici
Jan.
Feb.
Mar.
Apr.
4.42
2.56
2.57
3.92
8.35
June
July
Aug.
Sept
Oct.
Nov.
1.82
2.52
2.56
3.23
1.42
0.04
0.55
1.93
4.49
0.66
6,56
7.04
0.41
0.97
1.74
1.61
0.68
14.09
22.44
31.91
40.08
47.80
8.87
11.43
14.66
16.08
22.78
51.37
51.78
4.42
4.38
3.83
4.49
0.34
4.25
0.65
0.85
0.18
54.69
0.20
0.02
54.57
Total
54.67
10.78
10.80
54.67
I II_ I_ _~__ I__ I_ II I [
~~___ ____~ __ I~ __ _~ __~_ __
-15-
Frequency of Maximum Temperatures
(F)
Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct; Nov. Dec. Total
91-100 8 14 17 19 11 1 70
81-90 8 1 17 16 21 16 14 12 19 27 24 6 181
71-80 13 14 12 12 2 3 5 12 73
61-70 3 9 2 2 1 9 26
51-60 6 4 4 14
41-50 1 1
Total 31 28 31 30 31 30 31 31 30 31 30 31 365
Frequency of Minimum Temperatures
(F) Jan. Feb. Mar. Apr. May. June July Aug. Sept. Oct. Nov. Dec. Total
71-80 4 2 8 19 23 5 61
61-70 6 1 15 9 15 28 23 12 7 19 14 5 154
51-60 14 7 9 17 11 .5 14 141' 91
41-50 6 16 7 4 1 2 1 3 40
40 1 1 2
39 1 1
38 1 1 2
37 0
36 2 2
35 1 2 3
34 1 1
33 1 1
32 1 1
31 1 1
30 0
29 4 4
28 1 1
Total 31 28 31 30 31 30 31 31 30 31 30 31 365
Summary of Temperature Records
by Months
1944-1973 Av.
1973
1944-1972
Extremes
Month
Mean
Mean
High
Year
Year
Jan.
Feb.
Mar.
April
May
June
July
Aug.
Sept
Oct.
Nov.
Dec.
1971
19711/
1962
1950
1945'
1962
1968&4
1962
1951
1970
1962
19621/
1959
1961?!
1944
Also
occurred
Also occurred
Also occurred
Also occurred
Also occurred
1944,
1959.
1947.
1967.
1952.
'1948,
1954 and
1955.
I
i |. |- [--- i i-- --- ..
I II I. i- I~ II I. I I~ I 1 |I II- ii i
_~1_ ___ ___~ ~___~ _~ I 1__ I_
. -
|