Historical Climate Data

Temperature Summary
Station: 474953 MADELINE ISLAND, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	21.0	26.5	35.4	48.1	61.2	70.6	76.6	75.4	66.7	54.6	38.2	26.1	50.0
Min °F	3.4	6.1	15.7	27.8	37.7	47.2	54.5	54.2	46.2	36.1	24.7	12.3	30.5
Mean °F	12.2	16.3	25.6	38.0	49.5	58.9	65.6	64.8	56.5	45.4	31.5	19.2	40.3
HDD base 65	1638	1364	1223	813	492	213	82	92	271	610	1007	1419	9224
CDD base 65	0	0	0	0	10	29	100	86	15	0	0	0	240

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	23.0	1964	2.5	1977	52	01-25-1981	-35	01-10-1982
FEB	30.8	1998	5.0	1979	56	02-19-1994	-35	02-17-1979
MAR	35.0	2000	18.7	1996	65	03-29-1963	-31	03-01-1962
APR	46.2	1987	31.0	1950	87	04-22-1980	0	04-08-1972
MAY	56.6	1988	42.9	1979	92	05-29-1986	18	05-01-1979
JUN	65.6	1987	52.9	1969	97	06-19-1995	28	06-01-1976
JUL	72.4	1988	59.6	1992	102	07-28-1988	35	07-03-1979
AUG	70.0	1998	60.4	1977	97	08-14-1961	33	08-29-1976
SEP	62.3	1998	52.2	1974	93	09-12-1948	26	09-15-1964
OCT	56.6	1963	40.5	1988	87	10-03-1992	17	10-20-1952
NOV	42.3	2001	24.9	1995	72	11-04-1975	-5	11-30-1976
DEC	29.6	1959	9.6	1983	58	12-04-1998	-23	12-30-1976

Annual	47.2	1951	37.5	1979	102	07-28-1988	-35	01-10-1982
Winter	26.1	1998	8.2	1979	58	12-04-1998	-35	01-10-1982
Spring	45.1	1985	31.7	1950	92	05-29-1986	-31	03-01-1962
Summer	68.4	1988	59.4	1982	102	07-28-1988	28	06-01-1976
Fall	51.8	1963	41.0	1976	93	09-12-1948	-5	11-30-1976

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	26.4	31.0	13.0
FEB	0.0	18.7	27.9	10.3
MAR	0.0	10.6	28.9	3.2
APR	0.0	1.3	20.5	0.0
MAY	0.1	0.0	7.1	0.0
JUN	0.6	0.0	0.4	0.0
JUL	1.1	0.0	0.0	0.0
AUG	0.7	0.0	0.0	0.0
SEP	0.1	0.0	0.8	0.0
OCT	0.0	0.0	9.4	0.0
NOV	0.0	7.8	24.5	0.1
DEC	0.0	21.3	30.5	5.2

Annual	2.6	83.4	176.5	30.8
Winter	0.0	66.6	89.3	28.7
Spring	0.1	11.6	55.9	3.1
Summer	2.4	0.0	0.4	0.0
Fall	0.1	7.7	34.1	0.1