Historical Climate Data

Temperature Summary
Station: 474829 LONG LAKE DAM, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	21.7	28.0	38.2	52.1	66.4	73.8	77.8	75.7	66.2	54.2	37.7	25.5	51.4
Min °F	-2.2	2.0	13.2	26.1	38.1	48.0	52.8	51.3	43.3	32.7	20.6	5.5	27.6
Mean °F	9.8	15.0	25.7	39.1	52.3	60.9	65.3	63.5	54.8	43.5	29.2	15.5	39.6
HDD base 65	1715	1399	1219	777	416	159	75	112	314	669	1076	1536	9467
CDD base 65	0	0	0	0	20	36	84	66	6	0	0	0	212

Temperature Extremes
Period of Record: 1908-1996

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	23.3	1944	-9.0	1912	55	01-23-1942	-50	01-28-1915
FEB	24.4	1984	-1.8	1936	60	02-19-1930	-51	02-01-1938
MAR	37.0	1946	13.8	1926	80	03-29-1910	-44	03-11-1948
APR	48.1	1915	29.6	1950	90	04-28-1952	-18	04-01-1923
MAY	60.0	1977	42.0	1924	99	05-31-1934	9	05-02-1911
JUN	68.2	1933	54.0	1926	101	06-30-1911	20	06-04-1926
JUL	71.6	1916	58.1	1992	105	07-12-1936	28	07-19-1912
AUG	71.3	1947	57.0	1927	97	08-05-1947	25	08-28-1934
SEP	61.4	1908	47.3	1918	95	09-08-1976	16	09-30-1918
OCT	53.9	1947	33.3	1925	88	10-02-1976	-7	10-30-1925
NOV	37.4	1931	19.1	1995	75	11-01-1944	-20	11-20-1921
DEC	25.6	1931	5.1	1976	58	12-03-1982	-37	12-29-1917

Annual	46.3	1959	34.6	1917	105	07-12-1936	-51	02-01-1938
Winter	20.8	1932	5.0	1918	60	02-19-1930	-51	02-01-1938
Spring	44.3	1977	32.5	1996	99	05-31-1934	-44	03-11-1948
Summer	67.1	1983	57.6	1992	105	07-12-1936	20	06-04-1926
Fall	48.9	1931	37.5	1976	95	09-08-1976	-20	11-20-1921

Temperature Threshold Climatology
Derived from 1971-1996 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	26.8	30.9	17.4
FEB	0.0	19.6	28.1	14.1
MAR	0.0	9.7	29.7	7.4
APR	0.0	1.5	23.6	0.7
MAY	0.0	0.0	11.2	0.0
JUN	0.7	0.0	1.1	0.0
JUL	1.2	0.0	0.0	0.0
AUG	0.5	0.0	0.2	0.0
SEP	0.0	0.0	4.8	0.0
OCT	0.0	0.3	18.5	0.0
NOV	0.0	9.9	27.6	2.0
DEC	0.0	24.2	30.8	11.3

Annual	2.5	93.1	206.9	53.7
Winter	0.0	70.6	89.9	42.9
Spring	0.0	11.3	64.3	8.1
Summer	2.4	0.0	1.3	0.0
Fall	0.0	10.4	50.8	2.0