Historical Climate Data

Temperature Summary
Station: 479319 WISCONSIN DELLS, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	24.5	31.0	42.2	56.4	69.5	78.2	81.9	79.4	70.9	59.2	42.6	29.4	55.4
Min °F	4.0	9.0	20.6	32.3	43.6	53.3	58.1	56.1	47.1	35.4	23.4	10.5	32.8
Mean °F	14.3	20.0	31.4	44.4	56.6	65.8	70.0	67.8	59.0	47.3	33.0	20.0	44.1
HDD base 65	1574	1260	1043	621	290	74	17	50	201	551	959	1397	8037
CDD base 65	0	0	0	0	28	97	173	135	20	2	0	0	455

Temperature Extremes
Period of Record: 1923-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	28.8	1933	2.4	1977	63	01-26-1944	-43	01-30-1951
FEB	32.8	1998	2.7	1936	65	02-21-1930	-38	02-20-1929
MAR	43.2	1945	21.3	1960	84	03-29-1986	-29	03-01-1962
APR	52.0	1955	38.0	1950	91	04-28-1952	5	04-01-1923
MAY	65.1	1934	50.7	1997	104	05-31-1934	21	05-04-1935
JUN	74.7	1933	59.5	1969	102	06-29-1931	31	06-20-1992
JUL	77.6	1955	65.1	1992	114	07-13-1936	40	07-15-1945
AUG	76.9	1947	63.7	1992	104	08-16-1937	32	08-29-1934
SEP	67.7	1931	53.8	1993	98	09-01-1937	24	09-28-1942
OCT	60.3	1947	39.4	1925	90	10-06-1963	-2	10-30-1925
NOV	45.1	2001	26.3	1995	81	11-01-1938	-11	11-30-1947
DEC	32.6	1931	7.8	1985	63	12-02-1982	-27	12-26-2000

Annual	51.4	1983	42.0	1996	114	07-13-1936	-43	01-30-1951
Winter	27.7	1932	9.9	1936	65	02-21-1930	-43	01-30-1951
Spring	50.2	1977	39.3	1996	104	05-31-1934	-29	03-01-1962
Summer	73.1	1931	64.0	1992	114	07-13-1936	31	06-20-1992
Fall	55.1	1931	41.9	1976	98	09-01-1937	-11	11-30-1947

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	22.0	30.6	11.8
FEB	0.0	14.4	27.0	7.7
MAR	0.0	6.0	25.9	1.5
APR	0.0	0.4	15.1	0.0
MAY	0.2	0.0	3.0	0.0
JUN	1.9	0.0	0.0	0.0
JUL	3.2	0.0	0.0	0.0
AUG	1.7	0.0	0.0	0.0
SEP	0.5	0.0	1.2	0.0
OCT	0.0	0.0	10.7	0.0
NOV	0.0	5.3	23.2	0.6
DEC	0.0	17.1	29.8	6.1

Annual	7.5	64.4	165.2	27.4
Winter	0.0	53.6	87.4	25.6
Spring	0.2	6.4	43.8	1.5
Summer	6.8	0.0	0.0	0.0
Fall	0.5	5.2	34.8	0.6