coop station summary

Cooperative Observer Station Summary

ATOKA DAM (340394)

*
ATOKA County

Climate Division: 8

*
Latitude: 3427N; Longitude: 09604W

Elevation: 594 ft

*
Precipitation Period of Record:

19630101-19991231 ( 95%)

*
Temperature Period of Record:

19630101-19991230 ( 88%)

Monthly Averages (1971-2000)

Temperature (deg Fahrenheit)

Precipitation (inches)

Snowfall and Sleet (inches)

Daily Max

Daily Min

Daily Avg

Monthly Average

Monthly Average

January
49.5 28.3 38.7 1.96 .8

February
56.0 33.3 44.1 2.40 1.1

March
64.3 41.7 52.8 3.71 .0

April
72.4 48.9 60.2 4.00 .0

May
79.2 58.6 68.9 5.08 .0

June
88.6 67.3 77.8 4.24 .0

July
93.2 71.0 81.8 2.51 .0

August
94.6 70.6 82.4 2.32 .0

September
86.5 64.1 75.1 4.74 .0

October
75.1 52.3 63.5 3.87 .0

November
62.7 41.3 51.8 3.08 .1

December
51.0 30.9 40.8 2.41 .1

Annual
72.8 50.9 61.6 42.0 1.9

Monthly Averages (1971-2000)
	Temperature (deg Fahrenheit)	Precipitation (inches)	Snowfall and Sleet (inches)
	Daily Max	Daily Min	Daily Avg	Monthly Average	Monthly Average
January	49.5	28.3	38.7	1.96	.8
February	56.0	33.3	44.1	2.40	1.1
March	64.3	41.7	52.8	3.71	.0
April	72.4	48.9	60.2	4.00	.0
May	79.2	58.6	68.9	5.08	.0
June	88.6	67.3	77.8	4.24	.0
July	93.2	71.0	81.8	2.51	.0
August	94.6	70.6	82.4	2.32	.0
September	86.5	64.1	75.1	4.74	.0
October	75.1	52.3	63.5	3.87	.0
November	62.7	41.3	51.8	3.08	.1
December	51.0	30.9	40.8	2.41	.1
Annual	72.8	50.9	61.6	42.0	1.9

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 NA NA NA NA NA NA 1 * * * NA

Feb
NA NA NA NA NA NA NA NA NA NA NA 1 * * * NA

Mar
NA NA NA NA NA NA NA NA NA NA NA * * * * NA

Apr
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

May
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

Jun
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

Jul
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

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

Sep
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

Oct
NA NA NA NA NA NA NA NA NA NA NA 0 0 0 0 NA

Nov
NA NA NA NA NA NA NA NA NA NA NA * * * * NA

Dec
NA NA NA NA NA NA NA NA NA NA NA * * * * NA

Ann
NA NA NA NA NA NA NA NA NA NA NA 3 1 1 1 NA

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	NA	NA	NA	NA	NA	NA	1	*	*	*	NA
Feb	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	1	*	*	*	NA
Mar	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	*	*	*	*	NA
Apr	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
May	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Jun	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Jul	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Aug	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Sep	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Oct	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	NA
Nov	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	*	*	*	*	NA
Dec	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	*	*	*	*	NA
Ann	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	3	1	1	1	NA

Exceedence Values (2 in 10 years)

Month

Maximum Temperature Higher Than:

Minimum Temperature Lower Than:

Precipitation Less Than:

Precipitation Greater Than:

January
75 4 NA NA

February
82 9 1.10 3.51

March
86 20 NA NA

April
89 31 2.57 6.58

May
92 42 NA NA

June
100 52 2.66 6.47

July
106 60 1.26 3.99

August
106 58 1.18 3.24

September
102 42 NA NA

October
94 33 1.06 6.69

November
84 20 NA NA

December
77 11 1.27 3.79

Annual
109 2 NA NA

Exceedence Values (2 in 10 years)
Month	Maximum Temperature Higher Than:	Minimum Temperature Lower Than:	Precipitation Less Than:	Precipitation Greater Than:
January	75	4	NA	NA
February	82	9	1.10	3.51
March	86	20	NA	NA
April	89	31	2.57	6.58
May	92	42	NA	NA
June	100	52	2.66	6.47
July	106	60	1.26	3.99
August	106	58	1.18	3.24
September	102	42	NA	NA
October	94	33	1.06	6.69
November	84	20	NA	NA
December	77	11	1.27	3.79
Annual	109	2	NA	NA

Monthly Extremes

Temperature (F) (1963-1999)

Precipitation (inches) (1963-1999)

Snowfall (1963-1999)

Record High

Record Low

Monthly Max

Daily Max

Monthly Max

Daily Max

Greatest Depth

Jan
79 ( 9th, 1969) -5 (10th, 1977) 6.72" (1990) 3.79" ( 5th, 1998) 7.8" (1966) 4.0" ( 9th, 1977) 4.0" (16th, 1964)

Feb
91 (23rd, 1996) 2 (18th, 1978) 5.85" (1966) 4.40" ( 9th, 1966) 10.5" (1979) 6.5" ( 7th, 1979) 4.0" ( 9th, 1978)

Mar
91 (13th, 1967) 14 ( 4th, 1978) 8.16" (1968) 6.00" (28th, 1977) 3.8" (1965) 3.5" (25th, 1965) 1.0" (12th, 1968)

Apr
95 ( 1st, 1974) 27 ( 3rd, 1975) 10.29" (1967) 3.90" (20th, 1976) .0" - .0" - .0" -

May
95 (31st, 1985) 37 (19th, 1971) 9.22" (1989) 4.75" ( 8th, 1995) .0" - .0" - .0" -

Jun
104 (27th, 1980) 47 ( 1st, 1983) 8.11" (1974) 4.02" (12th, 1970) .0" - .0" - .0" -

Jul
110 ( 8th, 1984) 50 ( 6th, 1972) 7.08" (1981) 2.97" ( 7th, 1982) .0" - .0" - .0" -

Aug
110 ( 3rd, 1998) 53 (13th, 1967) 8.55" (1966) 3.40" (27th, 1964) .0" - .0" - .0" -

Sep
112 ( 8th, 1985) 40 (29th, 1967) 13.35" (1980) 8.00" (28th, 1980) .0" - .0" - .0" -

Oct
99 ( 1st, 1998) 27 (20th, 1989) 16.55" (1981) 4.69" (22nd, 1984) .0" - .0" - .0" -

Nov
87 ( 5th, 1987) 11 (30th, 1976) 5.95" (1973) 4.80" (26th, 1973) 2.0" (1976) 2.0" (14th, 1976) .1" (23rd, 1971)

Dec
80 ( 8th, 1966) 1 (25th, 1983) 8.03" (1971) 3.01" (21st, 1987) 2.0" (1975) 2.0" (29th, 1975) 1.0" (27th, 1967)

Annual
112 (Sep 8, 1985) -5 (Jan 10, 1977) 16.55" (Oct 1981) 8.00" (Sep 28, 1980) 10.5" (Feb 1979) 6.5" (Feb 7, 1979) 4.0" (Jan 16, 1964)

Monthly Extremes
	Temperature (F) (1963-1999)	Precipitation (inches) (1963-1999)	Snowfall (1963-1999)
	Record High	Record Low	Monthly Max	Daily Max	Monthly Max	Daily Max	Greatest Depth
Jan	79	( 9th, 1969)	-5	(10th, 1977)	6.72" (1990)	3.79" ( 5th, 1998)	7.8" (1966)	4.0" ( 9th, 1977)	4.0" (16th, 1964)
Feb	91	(23rd, 1996)	2	(18th, 1978)	5.85" (1966)	4.40" ( 9th, 1966)	10.5" (1979)	6.5" ( 7th, 1979)	4.0" ( 9th, 1978)
Mar	91	(13th, 1967)	14	( 4th, 1978)	8.16" (1968)	6.00" (28th, 1977)	3.8" (1965)	3.5" (25th, 1965)	1.0" (12th, 1968)
Apr	95	( 1st, 1974)	27	( 3rd, 1975)	10.29" (1967)	3.90" (20th, 1976)	.0" -	.0" -	.0" -
May	95	(31st, 1985)	37	(19th, 1971)	9.22" (1989)	4.75" ( 8th, 1995)	.0" -	.0" -	.0" -
Jun	104	(27th, 1980)	47	( 1st, 1983)	8.11" (1974)	4.02" (12th, 1970)	.0" -	.0" -	.0" -
Jul	110	( 8th, 1984)	50	( 6th, 1972)	7.08" (1981)	2.97" ( 7th, 1982)	.0" -	.0" -	.0" -
Aug	110	( 3rd, 1998)	53	(13th, 1967)	8.55" (1966)	3.40" (27th, 1964)	.0" -	.0" -	.0" -
Sep	112	( 8th, 1985)	40	(29th, 1967)	13.35" (1980)	8.00" (28th, 1980)	.0" -	.0" -	.0" -
Oct	99	( 1st, 1998)	27	(20th, 1989)	16.55" (1981)	4.69" (22nd, 1984)	.0" -	.0" -	.0" -
Nov	87	( 5th, 1987)	11	(30th, 1976)	5.95" (1973)	4.80" (26th, 1973)	2.0" (1976)	2.0" (14th, 1976)	.1" (23rd, 1971)
Dec	80	( 8th, 1966)	1	(25th, 1983)	8.03" (1971)	3.01" (21st, 1987)	2.0" (1975)	2.0" (29th, 1975)	1.0" (27th, 1967)
Annual	112	(Sep 8, 1985)	-5	(Jan 10, 1977)	16.55" (Oct 1981)	8.00" (Sep 28, 1980)	10.5" (Feb 1979)	6.5" (Feb 7, 1979)	4.0" (Jan 16, 1964)

First Freezing Temperature in Fall

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10
November 12 November 4 October 20

2 Years in 10
November 15 November 9 November 1

5 Years in 10
November 24 November 20 November 11

Last Freezing Temperature in Spring

Probability

24 F or Lower

28 F or Lower

32 F or Lower

1 Year in 10
March 15 March 31 April 14

2 Years in 10
March 10 March 25 April 7

5 Years in 10
February 27 March 13 March 27

First Freezing Temperature in Fall
Probability	24 F or Lower	28 F or Lower	32 F or Lower
1 Year in 10	November 12	November 4	October 20
2 Years in 10	November 15	November 9	November 1
5 Years in 10	November 24	November 20	November 11
Last Freezing Temperature in Spring
Probability	24 F or Lower	28 F or Lower	32 F or Lower
1 Year in 10	March 15	March 31	April 14
2 Years in 10	March 10	March 25	April 7
5 Years in 10	February 27	March 13	March 27

Number of Days in Growing Season

Probability

Higher Than 24 F

Higher Than 28 F

Higher Than 32 F

9 Years in 10
249 231 202

8 Years in 10
255 236 212

5 Years in 10
275 250 229

2 Years in 10
306 274 243

1 Year in 10
311 289 259

ATOKA DAM (340394)
*	ATOKA County	Climate Division: 8
*	Latitude: 3427N; Longitude: 09604W	Elevation: 594 ft
*	Precipitation Period of Record:	19630101-19991231 ( 95%)
*	Temperature Period of Record:	19630101-19991230 ( 88%)

Probability	Higher Than 24 F	Higher Than 28 F	Higher Than 32 F
Number of Days in Growing Season
9 Years in 10	249	231	202
8 Years in 10	255	236	212
5 Years in 10	275	250	229
2 Years in 10	306	274	243
1 Year in 10	311	289	259