OK73 Coop Summary

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Cooperative Observer Station Summary

PURCELL (347327)
*

MCCLAIN County

Climate Division: 5
*

Latitude: 3458N;     Longitude: 09726W

Elevation: 1042 ft
*

Precipitation Period of Record:

1893/01-2010/02 ( 64%)
*

Temperature Period of Record:

1893/01-2002/09 ( 69%)

 

Monthly Averages (1971-2000)

 

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

 

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January

49.8
25.7
37.5
1.63
2.8

February

56.3
30.7
43.2
2.26
1.8

March

65.6
39.4
52.3
3.55
.8

April

74.3
48.3
61.0
3.85
.0

May

81.2
57.6
69.2
5.99
.0

June

89.0
66.1
77.3
4.72
.0

July

94.8
70.3
82.3
2.78
.0

August

94.6
69.0
81.5
2.80
.0

September
86.6
61.9
74.0
4.32
.0

October

76.1
50.1
62.9
4.30
.0

November

61.7
38.0
49.6
2.90
.4

December

52.2
28.9
40.3
2.43
1.5

Annual

73.7
49.0
61.1
41.31
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
0
0
3
23
*
7
5
3
2
1
*
3
1
1
1
3

Feb
0
*
2
16
*
7
6
4
3
1
1
2
1
1
1
2

Mar
0
*
*
9
0
8
7
5
4
2
1
1
*
*
*
1

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

May
*
3
0
0
0
11
9
8
6
4
2
0
0
0
0
0

Jun
1
15
0
0
0
9
8
7
5
3
2
0
0
0
0
0

Jul
7
25
0
0
0
6
5
4
3
2
1
0
0
0
0
0

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

Sep
2
12
0
0
0
9
7
6
4
3
2
0
0
0
0
0

Oct
*
2
0
1
0
8
6
5
4
2
1
*
*
*
0
*

Nov
0
0
*
9
0
8
6
5
3
2
1
1
*
*
*
1

Dec
0
0
2
20
*
7
5
4
3
2
1
2
1
1
1
2

Ann
14
82
7
80
1
95
77
60
43
27
13
8
3
3
3
8

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January

75
1
.34
2.64

February

80
7
.66
2.75

March

90
12
1.37
4.57

April

91
26
1.59
5.05

May

97
39
3.33
8.74

June

101
50
1.73
7.17

July

107
56
.90
4.68

August

107
55
1.45
4.68

September
102
40
1.73
6.45

October

95
30
1.38
6.01

November

83
15
.74
3.79

December

75
6
.60
3.65

Annual

108
0
28.48
44.92

Monthly Extremes

 

Temperature (F) (1893-2002)

Precipitation (inches) (1893-2010)

Snowfall (1893-2010)

 

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
84
(24th, 1950)
-12
(10th, 1977)
6.15" (1932)
3.00" ( 4th, 1932)
19.0" (1930)
9.0" (22nd, 1995)
15.0" ( 7th, 1988)

Feb
90
(22nd, 1996)
-4
( 8th, 1933)
6.87" (1985)
4.60" (23rd, 1985)
13.0" (1986)
9.0" (28th, 1945)
8.0" ( 9th, 1978)

Mar
95
(31st, 1940)
3
( 7th, 1989)
8.75" (1990)
2.78" (20th, 1985)
14.0" (1989)
14.0" ( 6th, 1989)
14.0" ( 6th, 1989)

Apr
102
( 5th, 1893)
18
( 1st, 1954)
10.16" (1957)
5.20" ( 1st, 1988)
.5" (1938)
.5" ( 7th, 1938)
.0" -

May
102
(30th, 1985)
28
( 3rd, 1954)
19.50" (1950)
13.58" (11th, 1950)
.0" -
.0" -
.0" -

Jun
107
(15th, 1953)
40
( 2nd, 1894)
10.31" (1999)
5.73" ( 3rd, 1971)
.0" -
.0" -
.0" -

Jul
112
(19th, 1936)
46
( 5th, 1972)
10.81" (1975)
4.46" (12th, 1926)
.0" -
.0" -
.0" -

Aug
114
(11th, 1936)
45
(19th, 1950)
7.64" (1893)
4.00" ( 6th, 1984)
.0" -
.0" -
.0" -

Sep
111
( 5th, 1998)
33
(30th, 1984)
13.11" (1945)
5.25" (25th, 1959)
.0" -
.0" -
.0" -

Oct
101
( 3rd, 1898)
12
(31st, 1993)
15.30" (1983)
8.00" (20th, 1983)
.5" (1993)
.5" (30th, 1993)
1.0" (30th, 1993)

Nov
94
( 1st, 1893)
9
(29th, 1976)
7.47" (1992)
3.10" (11th, 1992)
4.0" (1980)
4.0" (17th, 1980)
4.0" (17th, 1980)

Dec
86
(25th, 1955)
-13
(23rd, 1989)
9.04" (1984)
2.80" (20th, 1991)
9.5" (1958)
8.0" (29th, 1954)
6.0" ( 5th, 1984)

Annual
114
(Aug 11, 1936)
-13
(Dec 23, 1989)
19.50" (May 1950)
13.58" (May 11, 1950)
19.0" (Jan 1930)
14.0" (Mar 6, 1989)
15.0" (Jan 7, 1988)

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  26
October  12

2 Years in 10
November   4
November   2
October  20

5 Years in 10
November  18
November  11
October  29

Last Freezing Temperature in Spring

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

April   3
April  14
April  19

2 Years in 10
March  28
April   7
April  14

5 Years in 10
March  14
March  28
April   5

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
223
202
189

8 Years in 10
229
210
193

5 Years in 10
248
232
205

2 Years in 10
270
245
219

1 Year in 10

283
258
226

Precipitation Quantiles (Inches)

PERCENT

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANNUAL

MEAN
1.63
2.26
3.55
3.85
5.99
4.72
2.78
2.80
4.32
4.30
2.90
2.43
41.31

10%
.12
.44
.79
1.19
1.92
1.20
.30
.75
.81
.50
.30
.29
26.36

20%
.34
.66
1.37
1.59
3.33
1.73
.90
1.45
1.73
1.38
.74
.60
28.48

30%
.62
.87
1.90
2.33
3.92
2.45
1.56
1.80
2.21
1.91
1.15
.95
33.71

40%
1.08
1.42
2.50
2.64
4.65
3.19
1.76
2.14
2.87
2.54
1.52
1.23
35.60

50%
1.38
1.64
2.85
3.15
5.79
3.69
2.23
2.75
3.78
3.02
1.99
1.37
36.89

60%
1.76
2.04
3.01
3.75
6.57
4.83
3.24
3.15
4.80
3.76
2.59
2.01
38.68

70%
2.25
2.32
3.42
4.38
7.52
5.66
4.01
3.65
6.19
4.37
3.00
2.40
42.28

80%
2.64
2.75
4.57
5.05
8.74
7.17
4.68
4.68
6.45
6.01
3.79
3.65
44.92

90%
3.37
4.50
6.13
6.52
10.64
8.14
6.68
5.24
7.69
7.80
4.72
4.32
49.10