OK45 Coop Summary

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Cooperative Observer Station Summary

JEFFERSON (344573)
*

GRANT County

Climate Division: 2
*

Latitude: 3643N;     Longitude: 09747W

Elevation: 1044 ft
*

Precipitation Period of Record:

1894/01-2010/10 ( 98%)
*

Temperature Period of Record:

1894/01-2010/10 ( 95%)

 

Monthly Averages (1971-2000)

 

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

 

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January

46.3
22.9
34.4
1.03
2.7

February

53.0
27.7
40.1
1.31
2.7

March

62.7
36.5
49.4
3.02
.6

April

72.5
45.7
58.8
3.16
.2

May

81.0
56.0
68.2
4.96
.0

June

91.1
65.3
77.9
4.31
.0

July

96.3
70.0
82.9
3.45
.0

August

95.1
68.4
81.5
3.06
.0

September
86.5
60.1
73.0
3.39
.0

October

75.1
48.3
61.3
3.14
.0

November

59.3
35.6
47.2
2.31
.5

December

48.7
26.0
37.1
1.39
1.5

Annual

72.4
46.9
59.4
34.54
7.0

Average Number of Days Per Month (1971-2000)

 

Temperature

Precipitation

Snowfall and Sleet

 

Max>100

Max>90

Max<32

Min<32

Min<0

any

meas

0.10"+

0.25"+

0.50"+

1.00"+

any

meas

0.50"+

1.00"+

Glazing

Jan
0
0
5
26
1
6
3
2
1
1
*
2
1
1
1
2

Feb
0
*
3
19
1
5
4
3
2
1
*
1
1
1
1
1

Mar
0
*
*
12
0
7
7
5
4
2
1
*
*
*
*
*

Apr
*
1
0
3
0
8
7
5
4
2
1
*
*
*
*
*

May
*
4
0
*
0
10
9
7
5
3
1
0
0
0
0
0

Jun
3
19
0
0
0
9
8
6
5
3
1
0
0
0
0
0

Jul
10
26
0
0
0
6
6
5
3
2
1
0
0
0
0
0

Aug
9
25
0
0
0
7
6
5
3
2
1
0
0
0
0
0

Sep
2
12
0
*
0
7
6
5
3
2
1
0
0
0
0
0

Oct
0
2
0
2
0
6
5
4
3
2
1
*
0
0
0
*

Nov
0
0
*
12
0
6
5
4
2
2
1
*
*
*
*
*

Dec
0
0
3
24
1
6
4
3
2
1
*
1
1
1
1
1

Ann
25
90
11
97
2
82
70
54
36
23
9
5
2
2
2
4

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January

73
-4
.25
1.73

February

79
0
.25
2.03

March

88
10
.70
3.18

April

92
24
1.41
4.20

May

98
35
1.80
6.77

June

105
48
2.00
6.36

July

109
54
1.04
5.10

August

109
52
1.28
4.96

September
103
38
1.04
5.06

October

95
25
.76
4.43

November

82
12
.08
3.10

December

74
1
.30
2.08

Annual

110
-6
23.34
37.96

Monthly Extremes

 

Temperature (F) (1894-2010)

Precipitation (inches) (1894-2010)

Snowfall (1894-2010)

 

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
85
(31st, 1911)
-20
(22nd, 1930)
4.87" (1949)
2.82" ( 5th, 2005)
26.0" (1930)
14.0" ( 7th, 1988)
12.0" (17th, 1930)

Feb
92
(22nd, 1996)
-23
(13th, 1905)
4.32" (1915)
3.09" (21st, 1997)
25.5" (1982)
14.5" ( 2nd, 1982)
16.0" (11th, 1982)

Mar
98
(31st, 1940)
-4
( 3rd, 1960)
10.23" (1973)
3.50" (10th, 1974)
11.5" (1970)
8.0" (26th, 1913)
18.0" (13th, 1999)

Apr
102
(12th, 1972)
17
( 9th, 1914)
9.22" (2009)
6.05" (26th, 2009)
7.0" (1938)
7.0" ( 8th, 1938)
4.0" ( 9th, 1973)

May
107
(31st, 1934)
25
( 1st, 1909)
14.36" (1987)
4.20" (21st, 1977)
.0" -
.0" -
.0" -

Jun
114
(15th, 1953)
42
( 4th, 1897)
12.25" (2007)
4.83" (10th, 1989)
.0" (1950)
.0" (27th, 1950)
.0" -

Jul
117
(18th, 1936)
44
(20th, 1899)
8.86" (1958)
4.00" ( 2nd, 1976)
.0" -
.0" -
.0" -

Aug
118
(11th, 1936)
40
(10th, 1903)
11.08" (2009)
6.00" (18th, 2009)
.0" -
.0" -
.0" -

Sep
111
( 2nd, 1939)
27
(30th, 1984)
12.19" (1908)
6.10" ( 3rd, 1908)
.0" -
.0" -
.0" -

Oct
102
( 2nd, 1898)
11
(30th, 1917)
15.76" (1998)
10.00" (11th, 1973)
1.0" (1913)
1.0" (28th, 1913)
.0" -

Nov
90
( 9th, 2006)
2
(17th, 1894)
7.71" (1909)
4.90" ( 3rd, 1974)
20.0" (1937)
6.5" (20th, 1898)
5.0" (18th, 1972)

Dec
86
(24th, 1955)
-16
(23rd, 1989)
4.35" (1999)
2.68" ( 4th, 1944)
14.0" (1918)
12.0" (23rd, 1918)
12.0" (23rd, 1918)

Annual
118
(Aug 11, 1936)
-23
(Feb 13, 1905)
15.76" (Oct 1998)
10.00" (Oct 11, 1973)
26.0" (Jan 1930)
14.5" (Feb 2, 1982)
18.0" (Mar 13, 1999)

First Freezing Temperature in Fall

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

October  27
October  19
October   7

2 Years in 10
November   2
October  24
October  11

5 Years in 10
November  13
November   5
October  23

Last Freezing Temperature in Spring

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

April   9
April  15
May   1

2 Years in 10
April   5
April  12
April  24

5 Years in 10
March  23
April   4
April  15

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
212
194
170

8 Years in 10
220
198
176

5 Years in 10
235
216
191

2 Years in 10
256
231
202

1 Year in 10

264
240
208

Precipitation Quantiles (Inches)

PERCENT

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANNUAL

MEAN
1.03
1.31
3.02
3.16
4.96
4.31
3.45
3.06
3.39
3.14
2.31
1.39
34.54

10%
.10
.07
.28
.75
1.18
1.51
.39
.76
.57
.31
.00
.10
20.65

20%
.25
.25
.70
1.41
1.80
2.00
1.04
1.28
1.04
.76
.08
.30
23.34

30%
.31
.42
.97
1.74
2.49
2.58
1.77
1.68
1.79
1.08
.43
.50
25.39

40%
.57
.65
1.21
2.06
3.24
2.94
2.45
2.16
2.20
1.70
.75
.67
27.86

50%
.70
.85
1.60
2.59
3.90
3.57
3.04
2.87
2.52
2.32
1.17
.85
29.76

60%
.90
1.04
1.99
3.11
4.69
4.49
3.49
3.45
3.28
2.63
1.94
1.17
32.51

70%
1.27
1.40
2.48
3.62
5.50
5.69
4.13
4.20
4.21
3.29
2.19
1.40
35.71

80%
1.73
2.03
3.18
4.20
6.77
6.36
5.10
4.96
5.06
4.43
3.10
2.08
37.96

90%
2.20
2.75
4.18
5.37
7.72
7.99
6.00
6.93
6.59
6.01
4.39
2.94
41.71