OK37 Coop Summary

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Cooperative Observer Station Summary

GRT SALT PLAINS DAM (343740)
*

ALFALFA County

Climate Division: 2
*

Latitude: 3645N;     Longitude: 09808W

Elevation: 1199 ft
*

Precipitation Period of Record:

1946/03-2010/10 ( 97%)
*

Temperature Period of Record:

1946/03-2010/10 ( 94%)

 

Monthly Averages (1971-2000)

 

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

 

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January

NA
NA
NA
.79
1.9

February

NA
NA
NA
1.06
2.7

March

NA
NA
NA
2.82
.9

April

NA
NA
NA
2.72
.1

May

NA
NA
NA
4.42
.0

June

NA
NA
NA
3.74
.0

July

NA
NA
NA
3.01
.0

August

NA
NA
NA
NA
.0

September
NA
NA
NA
2.76
.0

October

NA
NA
NA
2.76
.0

November

NA
NA
NA
2.11
.4

December

NA
NA
NA
.97
1.5

Annual

NA
NA
NA
30.65
7.2

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
NA
NA
NA
NA
NA
6
3
2
1
1
*
1
1
1
1
NA

Feb
NA
NA
NA
NA
NA
5
4
2
1
1
*
1
1
1
*
NA

Mar
NA
NA
NA
NA
NA
7
6
4
3
2
1
*
*
*
*
NA

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

May
NA
NA
NA
NA
NA
10
9
7
5
3
1
0
0
0
0
0

Jun
NA
NA
NA
NA
NA
9
8
6
4
3
1
0
0
0
0
0

Jul
NA
NA
NA
NA
NA
6
6
4
3
2
1
0
0
0
0
0

Aug
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
0
0
0
0
0

Sep
NA
NA
NA
NA
NA
7
6
4
3
2
1
0
0
0
0
0

Oct
NA
NA
NA
NA
NA
6
5
3
2
1
1
0
0
0
0
0

Nov
NA
NA
NA
NA
NA
6
5
3
2
1
1
*
*
*
*
NA

Dec
NA
NA
NA
NA
NA
5
4
2
1
1
*
1
1
1
1
NA

Ann
NA
NA
NA
NA
NA
84
70
47
32
20
9
3
2
2
2
NA

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January

73
-2
.12
1.32

February

79
3
.16
1.82

March

87
12
.75
3.27

April

93
27
.99
3.98

May

100
38
1.59
5.87

June

105
50
1.75
5.73

July

108
57
1.10
5.13

August

108
55
1.18
5.54

September
103
41
.95
4.74

October

95
29
.79
4.01

November

83
15
.26
2.91

December

74
3
.21
1.62

Annual

109
-5
22.05
34.90

Monthly Extremes

 

Temperature (F) (1946-2010)

Precipitation (inches) (1946-2010)

Snowfall (1946-2010)

 

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
83
(22nd, 1967)
-13
( 4th, 1947)
4.64" (2005)
3.57" ( 6th, 2005)
14.5" (1962)
6.0" ( 6th, 1988)
12.0" ( 7th, 1988)

Feb
93
(23rd, 1996)
-7
( 6th, 1982)
3.33" (2001)
2.00" (23rd, 2001)
24.0" (1982)
14.0" (22nd, 1971)
14.0" (22nd, 1971)

Mar
92
(18th, 1994)
-3
(11th, 1948)
9.87" (1973)
3.00" ( 3rd, 1988)
14.5" (1999)
13.0" (14th, 1999)
15.0" (14th, 1999)

Apr
99
(18th, 2006)
21
( 3rd, 1975)
8.39" (1970)
4.54" (18th, 1970)
2.0" (1973)
2.0" ( 8th, 1973)
2.0" ( 8th, 1973)

May
105
(31st, 1953)
31
( 3rd, 1954)
14.81" (1993)
4.02" ( 5th, 1987)
.0" (1951)
.0" (20th, 1951)
.0" -

Jun
114
(15th, 1953)
41
( 3rd, 1946)
12.14" (2007)
3.78" (23rd, 1957)
.0" -
.0" -
.0" -

Jul
114
(14th, 1954)
52
(24th, 1947)
9.91" (1979)
4.66" (29th, 1950)
.0" -
.0" -
.0" -

Aug
111
( 7th, 1946)
49
(31st, 1988)
12.78" (1995)
6.74" ( 3rd, 1995)
.0" -
.0" -
.0" -

Sep
110
( 4th, 1947)
34
(30th, 1985)
13.84" (2008)
8.50" (12th, 2008)
.0" -
.0" -
.0" -

Oct
101
( 3rd, 1951)
14
(31st, 1993)
14.71" (1998)
5.55" ( 3rd, 2002)
.0" (1951)
.0" (31st, 1951)
.0" -

Nov
90
( 9th, 2006)
9
(26th, 1975)
7.87" (1964)
4.27" ( 1st, 1998)
10.2" (1951)
6.0" (20th, 1988)
6.0" (20th, 1988)

Dec
82
( 7th, 1966)
-12
(22nd, 1989)
3.56" (1999)
2.90" ( 4th, 1947)
14.0" (2002)
10.0" (13th, 2003)
10.0" (15th, 1987)

Annual
114
(Jun 15, 1953)
-13
(Jan 4, 1947)
14.81" (May 1993)
8.50" (Sep 12, 2008)
24.0" (Feb 1982)
14.0" (Feb 22, 1971)
15.0" (Mar 14, 1999)

First Freezing Temperature in Fall

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

November   2
October  30
October  19

2 Years in 10
November   8
November   3
October  25

5 Years in 10
November  21
November  12
November   3

Last Freezing Temperature in Spring

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

March  31
April  10
April  14

2 Years in 10
March  26
April   7
April  12

5 Years in 10
March  15
March  26
April   4

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
229
213
195

8 Years in 10
233
218
201

5 Years in 10
247
228
213

2 Years in 10
270
244
224

1 Year in 10

279
253
231

Precipitation Quantiles (Inches)

PERCENT

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANNUAL

MEAN
.79
1.06
2.82
2.72
4.42
3.74
3.01
NA
2.76
2.76
2.11
.97
30.65

10%
.03
.08
.41
.69
1.26
1.24
.92
.96
.54
.46
.02
.10
20.48

20%
.12
.16
.75
.99
1.59
1.75
1.10
1.18
.95
.79
.26
.21
22.05

30%
.18
.32
.94
1.50
2.26
2.18
1.73
1.34
1.27
1.07
.49
.34
24.83

40%
.32
.47
1.35
1.74
3.35
3.02
2.41
1.66
1.78
1.55
.71
.44
26.72

50%
.42
.76
1.83
2.03
3.78
3.62
2.81
2.00
2.15
1.88
1.28
.79
29.49

60%
.63
1.08
2.25
2.66
4.29
4.76
3.23
3.28
2.52
2.82
1.61
.94
30.80

70%
.86
1.35
2.71
2.91
4.89
5.13
4.28
4.26
3.55
3.16
2.14
1.35
33.02

80%
1.32
1.82
3.27
3.98
5.87
5.73
5.13
5.54
4.74
4.01
2.91
1.62
34.90

90%
2.08
2.30
4.75
5.53
7.51
7.15
5.87
6.82
6.80
5.33
4.40
2.55
40.55