Historical Climate Data

Temperature Summary
Station: 470882 BLAIR, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	24.4	31.4	42.9	57.8	70.3	78.8	82.7	80.4	71.9	59.9	42.7	29.0	56.0
Min °F	0.1	6.4	19.8	32.2	43.5	52.9	57.5	55.5	45.9	34.2	22.5	7.7	31.5
Mean °F	12.3	18.9	31.4	45.0	56.9	65.9	70.1	68.0	58.9	47.1	32.6	18.4	43.8
HDD base 65	1635	1291	1042	601	285	74	22	47	207	556	972	1446	8178
CDD base 65	0	0	0	1	34	100	180	139	23	0	0	0	477

Temperature Extremes
Period of Record: 1896-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	24.4	1990	-4.8	1912	56	01-26-1981	-49	01-07-1912
FEB	31.8	1954	6.9	1979	61	02-19-1981	-45	02-03-1996
MAR	45.5	1910	20.6	1975	85	03-24-1910	-33	03-01-1962
APR	53.4	1955	37.2	1907	91	04-23-1980	-4	04-06-1982
MAY	64.6	1977	50.9	1997	93	05-02-1959	17	05-05-1907
JUN	71.7	1911	59.1	1969	100	06-22-1988	28	06-10-1972
JUL	76.5	1955	63.9	1992	105	07-14-1995	36	07-04-1972
AUG	76.1	1947	63.4	1992	105	08-23-1948	33	08-20-1950
SEP	66.4	1948	52.8	1993	98	09-09-1955	18	09-29-1967
OCT	59.0	1963	41.3	1988	90	10-06-1963	8	10-27-1976
NOV	44.5	2001	24.7	1991	78	11-07-1949	-18	11-30-1964
DEC	29.2	1959	4.5	1983	64	12-03-1982	-39	12-19-1983

Annual	47.6	1998	40.9	1907	105	07-14-1995	-49	01-07-1912
Winter	25.6	1998	6.5	1979	64	12-03-1982	-49	01-07-1912
Spring	51.1	1977	39.1	1996	93	05-02-1959	-33	03-01-1962
Summer	72.7	1949	63.4	1992	105	07-14-1995	28	06-10-1972
Fall	55.6	1963	41.2	1976	98	09-09-1955	-18	11-30-1964

Temperature Threshold Climatology
Derived from 1971-2000 Averages

*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding.

Month	# Days Max ≥ 90°F	# Days Max ≤ 32°F	# Days Min ≤ 32°F	# Days Min ≤ 0°F
JAN	0.0	23.4	30.9	15.3
FEB	0.0	15.0	27.8	10.2
MAR	0.0	6.6	26.9	3.2
APR	0.1	0.4	16.3	0.1
MAY	0.0	0.0	4.2	0.0
JUN	2.1	0.0	0.1	0.0
JUL	3.7	0.0	0.0	0.0
AUG	2.3	0.0	0.0	0.0
SEP	0.4	0.0	2.1	0.0
OCT	0.0	0.0	14.9	0.0
NOV	0.0	6.0	25.3	1.1
DEC	0.0	19.2	30.4	9.6

Annual	8.6	70.6	179.0	39.5
Winter	0.0	57.5	89.1	35.1
Spring	0.1	7.0	47.3	3.3
Summer	8.1	0.0	0.1	0.0
Fall	0.5	6.0	42.3	1.1