OK09 Coop Summary

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Cooperative Observer Station Summary

BOSWELL 4 NNW (340980)
*	CHOCTAW County	Climate Division: 9
*	Latitude: 3401N; Longitude: 09552W	Elevation: 549 ft
*	Precipitation Period of Record:	1941/08-1999/08 ( 89%)
*	Temperature Period of Record:	1959/05-1999/08 ( 93%)

	Temperature (deg Fahrenheit)			Precipitation (inches)	Snowfall and Sleet (inches)
Monthly Averages (1971-2000)
	Daily Max	Daily Min	Daily Avg	Monthly Average	Monthly Average
January	NA	NA	NA	NA	NA
February	NA	NA	NA	NA	.5
March	66.7	42.8	54.6	3.90	.2
April	74.3	NA	NA	NA	.0
May	80.8	58.9	69.6	6.14	.0
June	NA	NA	NA	4.58	.0
July	NA	NA	NA	NA	.0
August	NA	NA	NA	NA	.0
September	NA	NA	NA	NA	.0
October	NA	NA	NA	NA	.0
November	NA	NA	NA	NA	.0
December	NA	NA	NA	NA	.1
Annual	NA	NA	NA	NA	1.9

	Temperature					Precipitation						Snowfall and Sleet
Average Number of Days Per Month (1971-2000)
	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	NA	NA	NA	NA	NA
Feb	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	1	*	*	*	1
Mar	0	*	*	5	0	9	7	6	4	3	1	*	*	*	*	*
Apr	0	*	0	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	0
May	0	1	0	0	0	11	8	7	6	4	2	0	0	0	0	0
Jun	NA	NA	NA	NA	NA	9	7	6	5	3	2	0	0	0	0	0
Jul	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	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	NA	NA	NA	NA	NA	NA	0	0	0	0	0
Oct	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	0	0	0	0	0
Nov	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	*	*	*	*	*
Dec	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	*	*	*	*	*
Ann	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	NA	2	1	1	1	2

Month	Maximum Temperature Higher Than:	Minimum Temperature Lower Than:	Precipitation Less Than:	Precipitation Greater Than:
Exceedence Values (2 in 10 years)
January	77	5	.78	3.24
February	81	12	1.32	4.47
March	86	19	1.72	4.97
April	87	30	2.23	7.04
May	92	42	3.13	8.08
June	98	51	2.32	6.40
July	104	58	.34	5.04
August	104	58	1.31	4.33
September	100	42	2.04	7.11
October	93	33	1.13	7.38
November	83	20	.98	5.90
December	77	11	1.28	4.63
Annual	105	3	34.65	52.73

	Temperature (F) (1959-1999)				Precipitation (inches) (1941-1999)		Snowfall (1941-1999)
Monthly Extremes
	Record High		Record Low		Monthly Max	Daily Max	Monthly Max	Daily Max	Greatest Depth
Jan	87	( 8th, 1969)	1	(14th, 1964)	10.53" (1949)	4.30" (25th, 1949)	11.0" (1988)	10.0" ( 7th, 1988)	9.0" (16th, 1964)
Feb	92	(21st, 1996)	2	( 2nd, 1985)	8.03" (1990)	4.15" (12th, 1950)	7.0" (1951)	7.0" ( 7th, 1979)	7.0" ( 7th, 1979)
Mar	92	(30th, 1974)	10	( 9th, 1996)	10.63" (1990)	7.03" (27th, 1977)	5.0" (1989)	11.5" ( 1st, 1942)	7.0" ( 1st, 1942)
Apr	93	(18th, 1987)	25	( 3rd, 1975)	12.42" (1942)	3.94" ( 6th, 1953)	.0" (1953)	.0" (24th, 1953)	.0" -
May	95	(30th, 1959)	38	(12th, 1960)	16.29" (1982)	6.70" (13th, 1982)	.0" (1949)	.0" ( 1st, 1949)	.1" ( 5th, 1997)
Jun	100	(27th, 1988)	47	( 1st, 1964)	10.92" (1992)	4.57" (17th, 1964)	.0" (1949)	.0" (14th, 1949)	.0" -
Jul	108	(30th, 1986)	50	( 6th, 1972)	16.31" (1950)	3.75" (16th, 1959)	.0" -	.0" -	.0" -
Aug	108	( 5th, 1964)	50	(31st, 1988)	8.20" (1950)	3.50" (17th, 1950)	.0" -	1.3" (11th, 1941)	.0" -
Sep	109	( 5th, 1998)	38	(24th, 1989)	16.18" (1957)	9.58" (22nd, 1957)	.0" -	.0" -	.0" -
Oct	97	( 1st, 1998)	20	(31st, 1993)	14.01" (1991)	7.90" (25th, 1991)	.0" -	.0" -	.0" -
Nov	89	( 1st, 1982)	12	(29th, 1976)	11.12" (1996)	4.40" ( 2nd, 1982)	2.0" (1952)	2.0" (29th, 1952)	1.0" ( 2nd, 1951)
Dec	80	( 7th, 1966)	-3	(23rd, 1989)	7.65" (1982)	3.17" (21st, 1997)	5.0" (1958)	7.5" (16th, 1983)	3.0" (13th, 1958)
Annual	109	(Sep 5, 1998)	-3	(Dec 23, 1989)	16.31" (Jul 1950)	9.58" (Sep 22, 1957)	11.0" (Jan 1988)	11.5" (Mar 1, 1942)	9.0" (Jan 16, 1964)

Probability	24 F or Lower	28 F or Lower	32 F or Lower
First Freezing Temperature in Fall
1 Year in 10	November 12	November 4	October 27
2 Years in 10	November 16	November 5	November 1
5 Years in 10	November 30	November 15	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 25	April 10	April 11
2 Years in 10	March 15	March 26	April 9
5 Years in 10	March 4	March 17	March 26

Probability	Higher Than 24 F	Higher Than 28 F	Higher Than 32 F
Number of Days in Growing Season
9 Years in 10	251	226	207
8 Years in 10	257	235	213
5 Years in 10	278	243	225
2 Years in 10	303	262	239
1 Year in 10	312	279	246

PERCENT	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANNUAL
Precipitation Quantiles (Inches)
MEAN	NA	NA	3.90	NA	6.14	4.58	NA	NA	NA	NA	NA	NA	NA
10%	.56	.98	1.36	1.41	2.64	1.40	.14	.78	1.12	.33	.60	1.00	32.11
20%	.78	1.32	1.72	2.23	3.13	2.32	.34	1.31	2.04	1.13	.98	1.28	34.65
30%	1.10	1.52	2.46	2.59	4.38	2.66	1.25	1.65	2.55	2.10	1.89	1.83	39.81
40%	1.71	2.66	3.05	3.02	4.86	3.19	1.44	1.83	2.98	2.71	2.33	2.44	40.69
50%	1.97	3.16	3.39	4.17	5.52	3.90	2.23	2.39	4.38	3.80	2.93	2.62	42.26
60%	2.34	3.63	3.84	4.51	6.34	4.16	2.71	2.93	4.86	4.27	3.82	2.98	45.75
70%	2.97	3.99	4.24	5.25	6.81	5.44	3.66	3.64	5.64	5.59	4.73	3.71	48.65
80%	3.24	4.47	4.97	7.04	8.08	6.40	5.04	4.33	7.11	7.38	5.90	4.63	52.73
90%	5.59	5.53	5.42	9.79	10.11	7.66	7.41	5.47	8.06	9.91	7.43	6.55	59.58