Historical Climate Data

Temperature Summary
Station: 475479 MILWAUKEE WSO, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	28.0	32.5	42.6	53.9	66.0	76.3	81.1	79.1	71.9	60.2	45.7	33.1	55.9
Min °F	13.4	18.3	27.3	36.4	46.2	56.3	62.9	62.1	54.1	42.6	31.0	19.4	39.2
Mean °F	20.7	25.4	34.9	45.2	56.1	66.3	72.0	70.6	63.0	51.4	38.4	26.2	47.5
HDD base 65	1384	1124	948	611	318	86	13	18	134	443	808	1200	7087
CDD base 65	0	0	0	5	27	114	222	180	63	5	0	0	616

Temperature Extremes
Period of Record: 1942-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	31.1	1990	8.3	1977	62	01-26-1944	-26	01-17-1982
FEB	34.6	1998	15.1	1979	68	02-11-1999	-26	02-03-1996
MAR	44.4	1945	21.5	1960	82	03-29-1986	-10	03-01-1962
APR	50.8	1985	37.7	1975	91	04-22-1980	12	04-07-1982
MAY	63.2	1991	49.6	1966	93	05-28-1991	21	05-10-1966
JUN	72.2	1987	58.9	1969	101	06-14-1987	33	06-04-1945
JUL	76.7	1955	66.7	1962	103	07-13-1995	40	07-01-1965
AUG	76.4	1955	65.7	1950	103	08-01-1988	44	08-20-1950
SEP	67.5	1994	58.0	1962	98	09-01-1953	28	09-28-1942
OCT	59.4	1947	45.7	1980	89	10-06-1963	18	10-24-1981
NOV	47.5	2001	29.5	1959	77	11-01-1944	-5	11-24-1950
DEC	34.5	1994	13.2	1963	68	12-05-2001	-20	12-24-1983

Annual	51.0	1998	43.7	1972	103	07-13-1995	-26	01-17-1982
Winter	30.5	1998	15.3	1963	68	12-05-1901	-26	01-17-1982
Spring	50.4	1991	40.2	1971	93	05-28-1991	-10	03-01-1962
Summer	73.9	1995	65.4	1960	103	07-13-1995	33	06-04-1945
Fall	55.7	1994	46.0	1976	98	09-01-1953	-5	11-24-1950

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	19.6	29.2	5.9
FEB	0.0	13.9	25.2	2.7
MAR	0.0	5.5	22.2	0.2
APR	0.0	0.6	8.2	0.0
MAY	0.2	0.0	0.5	0.0
JUN	2.0	0.0	0.0	0.0
JUL	4.0	0.0	0.0	0.0
AUG	2.3	0.0	0.0	0.0
SEP	0.6	0.0	0.1	0.0
OCT	0.0	0.0	3.1	0.0
NOV	0.0	2.8	17.1	0.1
DEC	0.0	13.8	27.3	2.8

Annual	9.2	56.2	133.0	11.6
Winter	0.0	47.2	81.7	11.3
Spring	0.3	6.1	30.9	0.2
Summer	8.3	0.0	0.0	0.0
Fall	0.6	2.8	20.4	0.1