Historical Climate Data

Temperature Summary
Station: 476764 PORT WASHINGTON, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	27.4	31.4	40.2	50.0	61.6	71.8	78.0	76.8	69.6	58.2	44.5	32.6	53.5
Min °F	13.2	17.5	27.6	37.5	47.2	56.5	63.5	63.5	55.3	44.1	31.5	19.3	39.7
Mean °F	20.3	24.5	33.9	43.8	54.4	64.2	70.8	70.2	62.5	51.2	38.0	26.0	46.7
HDD base 65	1386	1135	963	638	341	109	22	24	125	432	811	1211	7197
CDD base 65	0	0	0	0	13	83	200	184	49	3	0	0	532

Temperature Extremes
Period of Record: 1896-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	30.4	1989	4.1	1912	59	01-19-1901	-31	01-24-1904
FEB	33.6	1998	8.2	1904	63	02-27-1896	-30	02-08-1904
MAR	43.6	1910	23.5	1960	80	03-27-1910	-15	03-01-1962
APR	47.9	1985	36.4	1904	92	04-22-1980	9	04-15-1904
MAY	59.8	1896	47.2	1907	95	05-25-1911	23	05-10-1966
JUN	69.8	1988	58.2	1905	102	06-21-1988	34	06-07-1901
JUL	74.0	1988	63.6	1905	106	07-13-1995	33	07-16-1900
AUG	73.2	1995	57.0	1896	103	08-17-1988	32	08-19-1896
SEP	66.4	1998	56.3	1902	96	09-05-1912	27	09-29-1899
OCT	58.5	1963	44.7	1988	89	10-06-1963	15	10-26-1898
NOV	46.5	2001	26.3	1995	76	11-03-1978	-10	11-29-1976
DEC	33.2	2001	13.1	1903	68	12-06-2001	-22	12-12-1903

Annual	50.1	1998	38.8	1904	106	07-13-1995	-31	01-24-1904
Winter	30.2	1998	10.5	1904	68	12-06-1901	-31	01-24-1904
Spring	47.8	1985	38.0	1904	95	05-25-1911	-15	03-01-1962
Summer	72.1	1988	63.1	1992	106	07-13-1995	32	08-19-1996
Fall	53.9	1971	43.8	1995	96	09-05-1912	-10	11-29-1976

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	18.9	29.3	6.7
FEB	0.0	13.0	25.7	2.9
MAR	0.0	5.6	23.5	0.2
APR	0.0	0.3	9.6	0.0
MAY	0.1	0.0	0.6	0.0
JUN	1.2	0.0	0.0	0.0
JUL	3.0	0.0	0.0	0.0
AUG	1.8	0.0	0.0	0.0
SEP	0.4	0.0	0.1	0.0
OCT	0.0	0.0	3.9	0.0
NOV	0.0	3.2	18.1	0.2
DEC	0.0	12.8	27.6	3.4

Annual	6.6	53.9	138.0	13.3
Winter	0.0	44.8	82.6	13.0
Spring	0.1	5.9	33.7	0.2
Summer	6.1	0.0	0.0	0.0
Fall	0.4	3.2	22.4	0.2