Historical Climate Data

Temperature Summary
Station: 475474 MILWAUKEE MT MARY COL, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	28.4	33.2	44.2	56.7	69.7	80.1	85.1	82.3	74.2	61.6	46.0	33.8	57.9
Min °F	11.5	15.8	25.6	36.6	47.8	57.3	63.4	61.6	52.6	41.4	29.2	18.1	38.4
Mean °F	20.0	24.5	34.9	46.7	58.8	68.7	74.3	72.0	63.4	51.5	37.6	26.0	48.2
HDD base 65	1397	1135	933	553	245	42	6	15	105	423	821	1211	6886
CDD base 65	0	0	0	2	51	153	293	231	57	4	0	0	791

Temperature Extremes
Period of Record: 1948-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	31.7	1990	8.0	1977	59	01-25-1950	-27	01-30-1951
FEB	35.6	1998	16.1	1979	67	02-12-1999	-25	02-03-1996
MAR	42.9	2000	22.5	1960	85	03-29-1986	-15	03-01-1962
APR	53.8	1985	40.4	1950	90	04-22-1980	11	04-03-1954
MAY	66.5	1977	52.1	1954	95	05-31-1988	25	05-10-1966
JUN	74.3	1988	61.5	1958	104	06-21-1988	32	06-02-1956
JUL	78.8	1999	67.8	1962	108	07-13-1995	40	07-06-1965
AUG	78.6	1988	65.6	1950	108	08-01-1988	41	08-04-1951
SEP	68.4	1998	58.6	1949	100	09-01-1953	27	09-20-1956
OCT	60.5	1963	45.3	1952	90	10-06-1963	16	10-18-1948
NOV	46.9	2001	29.3	1951	78	11-01-1950	-8	11-25-1950
DEC	34.4	1982	15.6	1983	68	12-06-2001	-22	12-24-1983

Annual	51.8	1987	44.8	1951	108	07-13-1995	-27	01-30-1951
Winter	31.1	1998	16.2	1963	68	12-06-1901	-27	01-30-1951
Spring	53.8	1977	41.7	1950	95	05-31-1988	-15	03-01-1962
Summer	77.0	1988	66.0	1951	108	07-13-1995	32	06-02-1956
Fall	55.3	1963	46.8	1976	100	09-01-1953	-8	11-25-1950

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	19.1	29.1	6.2
FEB	0.0	12.2	25.2	2.4
MAR	0.0	4.0	21.8	0.2
APR	0.0	0.2	8.3	0.0
MAY	1.0	0.0	0.6	0.0
JUN	4.3	0.0	0.0	0.0
JUL	8.0	0.0	0.0	0.0
AUG	4.5	0.0	0.0	0.0
SEP	1.0	0.0	0.1	0.0
OCT	0.0	0.0	3.8	0.0
NOV	0.0	2.4	17.0	0.1
DEC	0.0	12.5	27.0	2.8

Annual	18.8	50.6	133.3	11.8
Winter	0.0	43.9	81.3	11.5
Spring	1.1	4.2	30.8	0.2
Summer	16.9	0.0	0.0	0.0
Fall	1.0	2.4	20.9	0.1