Historical Climate Data

Temperature Summary
Station: 477174 RIDGELAND, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	18.8	25.6	37.4	54.2	67.3	75.8	79.8	77.2	68.0	56.4	37.9	23.4	51.8
Min °F	-1.9	3.8	17.2	30.6	42.5	52.8	57.3	55.1	45.4	34.2	21.0	5.9	30.3
Mean °F	8.5	14.7	27.3	42.4	54.9	64.3	68.6	66.2	56.7	45.3	29.5	14.7	41.1
HDD base 65	1754	1409	1169	678	336	97	36	65	262	611	1066	1562	9045
CDD base 65	0	0	0	0	23	74	146	101	12	0	0	0	356

Temperature Extremes
Period of Record: 1961-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	24.6	1990	-0.9	1977	54	01-25-1981	-47	01-09-1977
FEB	29.8	1998	6.2	1979	59	02-18-1981	-38	02-01-1996
MAR	38.5	1973	18.2	1965	80	03-29-1986	-41	03-01-1962
APR	49.9	1977	37.0	1995	91	04-22-1980	2	04-04-1975
MAY	64.1	1977	48.5	1997	92	05-31-1986	16	05-03-1967
JUN	70.4	1988	58.5	1969	96	06-19-1986	29	06-01-1964
JUL	75.1	1988	63.7	1992	100	07-15-1988	37	07-04-1972
AUG	72.7	1988	62.8	1997	101	08-02-1964	32	08-29-1976
SEP	63.1	1978	49.9	1993	96	09-07-1976	21	09-29-1967
OCT	55.0	1963	41.5	1976	88	10-01-1976	6	10-27-1976
NOV	42.7	2001	22.3	1995	71	11-04-1975	-21	11-30-1964
DEC	25.8	2001	4.3	2000	61	12-02-1998	-42	12-19-1983

Annual	46.8	1987	37.4	1979	101	08-02-1964	-47	01-09-1977
Winter	23.0	1998	5.7	1979	61	12-02-1998	-47	01-09-1977
Spring	49.9	1977	35.8	1996	92	05-31-1986	-41	03-01-1962
Summer	72.7	1988	63.1	1992	101	08-02-1964	29	06-01-1964
Fall	50.4	1963	40.1	1993	96	09-07-1976	-21	11-30-1964

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	25.1	30.8	15.8
FEB	0.0	16.8	27.6	10.1
MAR	0.0	7.6	27.5	3.6
APR	0.0	0.5	17.3	0.0
MAY	0.2	0.0	4.9	0.0
JUN	1.2	0.0	0.2	0.0
JUL	3.0	0.0	0.0	0.0
AUG	1.4	0.0	0.1	0.0
SEP	0.3	0.0	2.3	0.0
OCT	0.0	0.2	13.5	0.0
NOV	0.0	8.0	25.8	1.5
DEC	0.0	21.8	30.9	10.1

Annual	6.2	80.2	183.0	41.9
Winter	0.0	63.7	89.3	36.2
Spring	0.3	8.3	50.5	3.7
Summer	5.6	0.0	0.3	0.0
Fall	0.3	8.2	41.9	1.5