OK17 Coop Summary

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Cooperative Observer Station Summary

CHATTANOOGA 3 NE (341706)
*

COMANCHE County

Climate Division: 7
*

Latitude: 3427N;     Longitude: 09837W

Elevation: 1153 ft
*

Precipitation Period of Record:

1905/12-2010/10 ( 97%)
*

Temperature Period of Record:

1905/12-2009/02 ( 98%)

 

Monthly Averages (1971-2000)

 

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

 

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January

52.1
26.4
39.0
1.05
1.2

February

58.5
30.9
44.4
1.54
.7

March

67.3
38.9
52.8
2.49
.1

April

76.0
47.0
61.3
2.65
.0

May

84.5
57.6
70.8
4.81
.0

June

93.1
66.1
79.5
4.03
.0

July

98.5
70.3
84.2
2.22
.0

August

97.1
69.3
83.0
2.56
.0

September
89.0
62.3
75.3
3.26
.0

October

78.6
50.7
64.4
3.12
.0

November

63.9
38.2
50.7
1.59
.0

December

54.0
29.1
41.3
1.63
.5

Annual

76.2
49.0
62.3
30.67
2.3

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
24
*
4
3
2
1
1
*
1
1
*
*
1

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

Mar
0
*
*
8
0
5
5
4
3
2
1
*
*
*
*
*

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

May
1
9
0
0
0
7
7
6
4
3
2
0
0
0
0
0

Jun
4
22
0
0
0
6
6
5
4
3
1
0
0
0
0
0

Jul
14
29
0
0
0
4
4
3
2
2
1
0
0
0
0
0

Aug
13
27
0
0
0
5
5
4
3
2
1
0
0
0
0
0

Sep
4
16
0
0
0
6
5
5
3
2
1
0
0
0
0
0

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

Nov
0
0
*
9
0
4
4
3
2
1
*
*
*
*
*
*

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

Ann
36
108
5
78
*
59
54
44
31
21
9
3
1
1
1
3

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January

78
4
.20
1.75

February

83
9
.44
2.09

March

91
16
.70
2.86

April

94
27
1.14
4.00

May

100
39
1.94
7.02

June

105
52
1.50
5.49

July

109
59
.76
3.93

August

109
56
.67
4.09

September
104
42
.61
5.21

October

97
30
.90
4.72

November

85
17
.22
2.71

December

78
8
.24
2.52

Annual

110
2
21.75
34.93

Monthly Extremes

 

Temperature (F) (1905-2009)

Precipitation (inches) (1905-2010)

Snowfall (1905-2010)

 

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
90
(31st, 1911)
-21
(11th, 1918)
4.50" (1949)
2.00" (31st, 1923)
11.0" (1988)
9.0" ( 7th, 1988)
6.0" ( 1st, 1947)

Feb
92
( 1st, 1911)
-5
( 2nd, 1951)
5.18" (1938)
2.09" (23rd, 1985)
10.0" (1968)
4.0" (21st, 1912)
6.0" (22nd, 1968)

Mar
99
(27th, 1971)
4
( 3rd, 1943)
7.51" (2007)
2.65" (23rd, 2000)
6.0" (1942)
6.0" ( 1st, 1942)
3.0" ( 1st, 1922)

Apr
103
(16th, 2006)
20
( 3rd, 1975)
8.12" (1922)
3.25" (25th, 1915)
8.0" (1938)
8.0" ( 7th, 1938)
.1" ( 6th, 1939)

May
111
(24th, 2000)
31
( 1st, 1909)
13.16" (1982)
6.41" (17th, 1951)
.0" (1954)
.0" ( 1st, 1954)
.0" -

Jun
116
(27th, 1994)
44
( 3rd, 1919)
13.09" (2007)
4.47" ( 4th, 1989)
.0" -
.0" -
.0" -

Jul
114
(19th, 1936)
50
( 5th, 1915)
8.56" (1908)
6.00" (20th, 1931)
.0" -
.0" -
.0" -

Aug
115
( 6th, 1964)
47
(31st, 1915)
10.42" (2008)
5.00" (19th, 2007)
.0" -
.0" -
.0" -

Sep
113
( 5th, 2000)
34
(21st, 1983)
10.58" (1925)
6.70" (14th, 1925)
.0" -
.0" -
.0" -

Oct
105
( 1st, 1977)
16
(31st, 1993)
14.37" (1919)
4.50" (18th, 1960)
.0" (1913)
.0" (26th, 1913)
.0" -

Nov
90
(21st, 1908)
10
(29th, 1911)
5.93" (2004)
3.00" (29th, 1909)
2.5" (1918)
2.5" (25th, 1918)
4.0" (29th, 2001)

Dec
86
(10th, 1939)
-13
(23rd, 1989)
8.03" (1911)
4.00" ( 9th, 1911)
6.1" (2000)
5.0" (26th, 2000)
4.0" ( 6th, 1942)

Annual
116
(Jun 27, 1994)
-21
(Jan 11, 1918)
14.37" (Oct 1919)
6.70" (Sep 14, 1925)
11.0" (Jan 1988)
9.0" (Jan 7, 1988)
6.0" (Jan 1, 1947)

First Freezing Temperature in Fall

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10

November   5
October  28
October  19

2 Years in 10
November  12
November   3
October  24

5 Years in 10
November  23
November  12
November   4

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  20

2 Years in 10
March  26
April   5
April  16

5 Years in 10
March  11
March  23
April   6

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
228
211
190

8 Years in 10
237
218
197

5 Years in 10
261
235
210

2 Years in 10
277
251
222

1 Year in 10

285
260
225

Precipitation Quantiles (Inches)

PERCENT

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANNUAL

MEAN
1.05
1.54
2.49
2.65
4.81
4.03
2.22
2.56
3.26
3.12
1.59
1.63
30.67

10%
.00
.17
.25
.70
1.18
.76
.44
.21
.39
.35
.06
.08
19.14

20%
.20
.44
.70
1.14
1.94
1.50
.76
.67
.61
.90
.22
.24
21.75

30%
.35
.64
1.04
1.50
2.90
1.79
1.18
1.17
1.25
1.26
.62
.52
24.60

40%
.66
.82
1.30
1.91
3.38
2.58
1.38
1.63
2.00
1.72
.76
.73
25.95

50%
.89
.96
1.76
2.30
4.14
3.29
1.98
2.09
2.67
2.09
.94
1.04
28.38

60%
1.18
1.31
2.13
2.66
5.36
3.78
2.34
2.62
3.43
2.45
1.32
1.26
30.21

70%
1.42
1.59
2.40
3.37
6.14
4.77
3.05
3.32
4.15
3.54
1.93
1.64
32.48

80%
1.75
2.09
2.86
4.00
7.02
5.49
3.93
4.09
5.21
4.72
2.71
2.52
34.93

90%
2.66
2.85
4.04
5.09
9.10
7.52
5.57
5.37
6.06
7.88
3.69
3.16
40.73