Historical Climate Data

Temperature Summary
Station: 471676 CLINTONVILLE SEWAGE PLA, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	23.3	28.7	39.3	54.1	67.7	76.5	80.6	77.8	69.4	57.5	41.5	27.9	53.7
Min °F	3.7	8.4	19.4	31.9	43.5	52.9	57.8	54.8	45.2	34.3	23.5	10.8	32.2
Mean °F	13.5	18.6	29.4	43.0	55.6	64.7	69.2	66.3	57.3	45.9	32.5	19.4	43.0
HDD base 65	1597	1302	1105	659	320	95	23	66	247	593	975	1416	8398
CDD base 65	0	0	0	0	28	86	154	106	16	0	0	0	390

Temperature Extremes
Period of Record: 1952-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	23.7	1990	2.9	1977	53	01-22-1964	-35	01-17-1982
FEB	30.0	1998	9.2	1979	59	02-27-2000	-31	02-03-1996
MAR	40.1	1973	22.8	1960	78	03-08-2000	-26	03-02-1962
APR	49.2	1986	37.6	1975	92	04-23-1980	6	04-03-1954
MAY	63.4	1977	48.8	1954	93	05-02-1959	19	05-05-1961
JUN	70.7	1988	58.4	1969	101	06-21-1988	31	06-06-1958
JUL	74.0	1988	63.6	1992	106	07-14-1995	38	07-06-1965
AUG	72.4	1959	63.2	1992	104	08-21-1955	34	08-31-1967
SEP	63.9	1998	53.6	1993	97	09-02-1953	22	09-22-1974
OCT	57.2	1963	41.7	1976	89	10-06-1963	15	10-27-1976
NOV	42.5	2001	25.9	1995	73	11-06-1975	-10	11-29-1976
DEC	29.0	1959	9.2	1989	62	12-05-2001	-23	12-21-1989

Annual	47.3	1987	41.3	1989	106	07-14-1995	-35	01-17-1982
Winter	25.9	1998	10.5	1979	62	12-05-1901	-35	01-17-1982
Spring	49.2	1977	38.4	1996	93	05-02-1959	-26	03-02-1962
Summer	72.3	1988	62.8	1992	106	07-14-1995	31	06-06-1958
Fall	52.0	1963	41.6	1976	97	09-02-1953	-10	11-29-1976

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	23.3	30.8	12.6
FEB	0.0	16.0	27.7	8.1
MAR	0.0	6.7	27.7	2.1
APR	0.0	0.6	15.7	0.0
MAY	0.1	0.0	2.9	0.0
JUN	2.1	0.0	0.0	0.0
JUL	3.0	0.0	0.0	0.0
AUG	1.3	0.0	0.0	0.0
SEP	0.2	0.0	1.7	0.0
OCT	0.0	0.0	12.4	0.0
NOV	0.0	5.3	24.9	0.5
DEC	0.0	19.1	30.4	6.6

Annual	6.9	71.7	175.0	30.0
Winter	0.0	58.4	88.9	27.4
Spring	0.2	7.3	46.7	2.1
Summer	6.5	0.0	0.0	0.0
Fall	0.2	5.5	39.4	0.5