Historical Climate Data

Temperature Summary
Station: 479190 WHITEWATER, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	25.1	30.2	42.2	55.7	68.5	78.3	82.0	79.0	71.5	60.0	43.6	30.6	55.6
Min °F	7.9	12.8	23.9	34.6	45.2	54.9	59.8	57.5	48.8	38.0	26.5	14.6	35.4
Mean °F	16.5	21.5	33.1	45.2	56.9	66.6	70.9	68.3	60.2	49.0	35.1	22.6	45.5
HDD base 65	1504	1218	991	596	281	59	16	50	174	499	899	1314	7601
CDD base 65	0	0	0	1	29	106	197	152	28	2	0	0	515

Temperature Extremes
Period of Record: 1949-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	28.7	1990	6.8	1977	60	01-25-1950	-37	01-30-1951
FEB	34.6	1998	13.5	1994	66	02-12-1999	-27	02-03-1996
MAR	43.1	1973	21.1	1960	82	03-30-1986	-20	03-01-1962
APR	54.7	1955	40.4	1950	90	04-22-1980	0	04-07-1982
MAY	66.9	1977	51.7	1997	93	05-19-1975	17	05-09-1966
JUN	72.4	1971	62.6	1969	100	06-19-1953	30	06-06-1998
JUL	77.4	1955	65.7	1998	100	07-27-1955	40	07-01-1965
AUG	75.7	1959	62.6	1997	101	08-31-1953	37	08-28-1986
SEP	67.7	1978	55.6	1993	100	09-01-1953	26	09-27-1991
OCT	60.1	1963	43.4	1987	89	10-01-1971	13	10-30-1988
NOV	46.3	2001	27.1	1995	78	11-01-1950	-10	11-25-1950
DEC	32.6	1959	10.7	1983	66	12-06-2001	-25	12-25-2000

Annual	50.5	1953	42.4	1989	101	08-31-1953	-37	01-30-1951
Winter	28.8	1998	15.0	1979	66	12-06-1901	-37	01-30-1951
Spring	54.3	1977	40.7	1996	93	05-19-1975	-20	03-01-1962
Summer	73.9	1955	64.3	1992	101	08-31-1953	30	06-06-1998
Fall	54.8	1971	45.2	1995	100	09-01-1953	-10	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	20.5	30.3	9.4
FEB	0.0	14.0	26.5	5.4
MAR	0.0	4.7	24.2	0.7
APR	0.0	0.2	11.7	0.0
MAY	0.5	0.0	2.2	0.0
JUN	2.8	0.0	0.1	0.0
JUL	5.3	0.0	0.0	0.0
AUG	2.7	0.0	0.0	0.0
SEP	0.9	0.0	0.7	0.0
OCT	0.0	0.0	8.0	0.0
NOV	0.0	3.5	20.3	0.3
DEC	0.0	14.2	28.9	4.5

Annual	12.2	56.9	152.9	20.2
Winter	0.0	48.7	85.7	19.3
Spring	0.5	4.9	38.1	0.7
Summer	10.8	0.0	0.1	0.0
Fall	0.9	3.6	29.2	0.3