Historical Climate Data

Temperature Summary
Station: 476718 PORTAGE, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	24.9	30.5	42.0	56.4	69.1	78.5	82.2	79.7	71.5	59.8	43.4	30.0	55.7
Min °F	5.5	10.6	22.0	34.0	45.0	54.6	59.0	56.6	47.1	36.3	25.2	12.9	34.1
Mean °F	15.2	20.6	32.0	45.2	57.1	66.6	70.6	68.2	59.3	48.1	34.3	21.5	44.9
HDD base 65	1545	1245	1022	595	283	67	17	54	200	527	922	1350	7827
CDD base 65	0	0	0	1	35	113	191	152	29	1	0	0	522

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	30.7	1933	-1.0	1912	56	01-25-1944	-35	01-15-1963
FEB	33.9	1954	6.5	1936	63	02-22-1930	-37	02-01-1918
MAR	44.9	1945	22.2	1899	83	03-29-1910	-25	03-01-1962
APR	56.6	1915	39.1	1907	94	04-28-1952	5	04-07-1982
MAY	67.0	1934	50.8	1907	102	05-31-1934	20	05-10-1966
JUN	78.0	1933	59.1	1969	104	06-23-1911	29	06-10-1972
JUL	80.4	1921	66.4	1992	111	07-14-1936	37	07-31-1971
AUG	77.7	1947	63.9	1967	103	08-02-1988	33	08-29-1965
SEP	70.7	1931	55.5	1993	103	09-06-1922	17	09-22-1974
OCT	61.7	1963	39.5	1917	97	10-26-1900	8	10-30-1925
NOV	46.6	2001	27.7	1995	76	11-01-1933	-10	11-29-1976
DEC	33.8	1931	10.5	1985	65	12-02-1962	-24	12-24-1983

Annual	52.7	1931	42.6	1917	111	07-14-1936	-37	02-01-1918
Winter	29.2	1932	12.3	1904	65	12-02-1962	-37	02-01-1918
Spring	52.4	1977	40.8	1996	102	05-31-1934	-25	03-01-1962
Summer	75.7	1921	65.3	1992	111	07-14-1936	29	06-10-1972
Fall	57.4	1931	43.2	1896	103	09-06-1922	-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	21.3	30.7	10.5
FEB	0.0	14.2	26.7	6.3
MAR	0.0	5.0	24.8	1.2
APR	0.1	0.3	11.7	0.0
MAY	0.2	0.0	2.6	0.0
JUN	2.9	0.0	0.1	0.0
JUL	5.4	0.0	0.0	0.0
AUG	2.6	0.0	0.0	0.0
SEP	0.6	0.0	1.5	0.0
OCT	0.0	0.0	9.8	0.0
NOV	0.0	4.3	22.1	0.2
DEC	0.0	15.9	29.4	5.7

Annual	11.7	60.9	159.8	24.0
Winter	0.0	51.4	86.8	22.5
Spring	0.3	5.3	39.1	1.2
Summer	10.9	0.0	0.1	0.0
Fall	0.6	4.3	33.4	0.2