OK85 Coop Summary

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Cooperative Observer Station Summary

STILWELL (348506)
*

ADAIR County

Climate Division: 6
*

Latitude: 3554N;     Longitude: 09439W

Elevation: 999 ft
*

Precipitation Period of Record:

1948/10-2003/04 ( 97%)
*

Temperature Period of Record:

1960/01-2003/04 ( 96%)

 

Monthly Averages (1971-2000)

 

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

 

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January

47.2
26.5
36.6
2.46
4.4

February

53.4
31.3
42.1
2.77
3.2

March

62.2
39.4
50.6
4.53
1.5

April

71.0
47.4
59.0
4.76
.0

May

77.6
56.1
66.6
5.99
.0

June

85.0
64.1
74.3
5.16
.0

July

90.8
68.4
79.3
3.21
.0

August

90.2
66.9
78.3
3.46
.0

September
82.5
60.4
71.2
4.74
.0

October

72.7
49.6
60.9
4.23
.0

November

59.8
39.3
49.3
4.91
1.1

December

49.8
30.3
40.0
3.65
1.8

Annual

70.3
48.4
59.1
49.66
12.2

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
0
0
4
22
1
12
9
4
3
1
1
5
3
2
1
5

Feb
0
0
2
15
*
11
9
5
3
2
1
4
2
1
1
4

Mar
0
*
*
8
0
13
11
7
5
3
1
2
1
*
*
1

Apr
0
0
0
2
0
13
11
7
6
3
1
*
*
0
0
*

May
0
*
0
0
0
15
13
8
6
4
2
0
0
0
0
0

Jun
*
6
0
0
0
13
10
7
5
4
2
0
0
0
0
0

Jul
2
18
0
0
0
9
8
5
3
2
1
0
0
0
0
0

Aug
2
17
0
0
0
10
8
5
3
2
1
0
0
0
0
0

Sep
*
6
0
*
0
12
10
7
5
3
1
0
0
0
0
0

Oct
0
*
0
1
0
11
9
5
4
2
1
*
0
0
0
*

Nov
0
0
*
9
0
11
10
6
5
3
2
1
1
1
*
1

Dec
0
0
2
18
*
12
9
5
4
2
1
3
1
1
1
3

Ann
4
48
8
77
1
140
115
71
50
33
16
16
7
5
4
15

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January

72
-2
1.06
3.46

February

76
4
1.46
4.70

March

82
14
2.21
5.93

April

87
27
2.75
6.07

May

89
36
4.30
8.21

June

93
46
2.40
7.70

July

102
53
.95
6.97

August

103
52
1.86
5.15

September
97
37
2.11
6.04

October

89
28
1.51
6.58

November

80
16
1.48
5.52

December

73
4
1.38
5.47

Annual

105
-6
37.89
56.38

Monthly Extremes

 

Temperature (F) (1960-2003)

Precipitation (inches) (1948-2003)

Snowfall (1948-2003)

 

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
75
(28th, 1970)
-12
(10th, 1977)
8.61" (1998)
3.40" ( 4th, 1998)
16.7" (1979)
8.0" (28th, 2000)
10.0" (10th, 1977)

Feb
85
(22nd, 1996)
-9
( 4th, 1996)
7.96" (1951)
2.75" ( 9th, 1966)
12.8" (1978)
7.8" ( 7th, 1961)
8.0" ( 7th, 1961)

Mar
90
(11th, 1967)
3
( 9th, 1996)
9.96" (1973)
2.77" (24th, 1978)
14.7" (1989)
12.1" ( 6th, 1989)
14.0" ( 6th, 1989)

Apr
91
( 6th, 1960)
22
( 2nd, 1962)
13.04" (1957)
4.80" ( 3rd, 1957)
.7" (1957)
.7" (13th, 1957)
1.0" (13th, 1957)

May
92
(21st, 1987)
31
( 1st, 1960)
13.78" (1990)
4.67" ( 3rd, 1990)
.0" (1949)
.0" ( 1st, 1949)
.0" -

Jun
100
(30th, 1988)
41
( 7th, 1998)
14.70" (2000)
3.70" (21st, 2000)
.0" (1955)
.0" ( 6th, 1955)
.0" -

Jul
108
(25th, 1977)
47
(31st, 1971)
10.08" (1958)
4.32" (23rd, 1960)
.0" (1954)
.0" (20th, 1954)
.0" -

Aug
107
( 4th, 1964)
46
(12th, 1967)
9.50" (1964)
3.81" (10th, 1986)
.0" -
.0" -
.0" -

Sep
106
( 3rd, 2000)
31
(30th, 1984)
15.51" (1970)
6.45" (27th, 1996)
.0" -
.0" -
.0" -

Oct
94
(11th, 1963)
23
( 9th, 2000)
11.61" (1986)
6.45" ( 1st, 1986)
.0" (1957)
.0" (26th, 1957)
.1" (22nd, 1996)

Nov
87
(14th, 1999)
5
(29th, 1976)
12.42" (1996)
4.41" ( 5th, 1994)
6.2" (1951)
4.5" (26th, 1975)
4.0" (23rd, 1971)

Dec
79
( 5th, 1998)
-12
(23rd, 1989)
8.67" (1982)
3.50" (16th, 2001)
9.6" (2000)
8.4" (29th, 1954)
8.0" (29th, 1954)

Annual
108
(Jul 25, 1977)
-12
(Jan 10, 1977)
15.51" (Sep 1970)
6.45" (Sep 27, 1996)
16.7" (Jan 1979)
12.1" (Mar 6, 1989)
14.0" (Mar 6, 1989)

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  24
October  10

2 Years in 10
November   5
October  28
October  12

5 Years in 10
November  14
November   6
October  22

Last Freezing Temperature in Spring

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

April   2
April  11
April  27

2 Years in 10
March  25
April   9
April  21

5 Years in 10
March  16
March  30
April  11

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
222
202
177

8 Years in 10
227
211
182

5 Years in 10
245
224
192

2 Years in 10
258
238
211

1 Year in 10

277
244
213

Precipitation Quantiles (Inches)

PERCENT

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANNUAL

MEAN
2.46
2.77
4.53
4.76
5.99
5.16
3.21
3.46
4.74
4.23
4.91
3.65
49.66

10%
.71
1.04
1.69
2.32
2.67
1.74
.44
1.25
1.58
1.00
.90
.88
37.07

20%
1.06
1.46
2.21
2.75
4.30
2.40
.95
1.86
2.11
1.51
1.48
1.38
37.89

30%
1.40
1.63
2.71
3.20
4.99
3.15
1.62
2.04
3.07
1.99
2.30
1.70
41.66

40%
1.80
2.18
3.28
3.50
5.80
3.74
2.34
2.56
3.78
2.60
3.30
2.02
43.48

50%
2.32
2.63
3.68
4.36
6.29
4.26
3.05
3.15
4.10
3.28
4.08
2.90
46.45

60%
2.67
3.05
4.19
4.93
6.84
4.68
3.67
3.97
4.32
3.95
4.29
3.54
50.12

70%
3.18
3.44
4.93
5.32
7.49
5.93
4.76
4.69
4.67
4.96
4.95
4.50
52.96

80%
3.46
4.70
5.93
6.07
8.21
7.70
6.97
5.15
6.04
6.58
5.52
5.47
56.38

90%
5.33
5.78
6.92
8.39
9.30
8.82
8.99
6.52
7.95
8.25
8.10
6.39
58.42