Historical Climate Data

Temperature Summary
Station: 473756 HORICON, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	25.4	30.0	41.6	55.5	68.6	77.8	81.8	79.4	71.6	59.9	43.9	30.6	55.5
Min °F	6.6	11.2	23.0	35.1	46.9	56.6	61.4	58.8	49.6	38.5	26.8	13.9	35.7
Mean °F	16.0	20.6	32.3	45.3	57.8	67.2	71.6	69.1	60.6	49.2	35.4	22.3	45.6
HDD base 65	1519	1243	1014	592	271	49	13	35	159	492	890	1326	7603
CDD base 65	0	0	0	2	46	115	218	162	27	2	0	0	572

Temperature Extremes
Period of Record: 1970-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	25.5	1990	4.6	1977	55	01-19-1996	-36	01-19-1994
FEB	33.0	1998	11.6	1989	63	02-27-2000	-30	02-03-1996
MAR	41.5	1973	25.8	1996	80	03-30-1986	-10	03-05-1978
APR	53.4	1977	40.4	1995	89	04-22-1980	9	04-07-1982
MAY	66.7	1977	50.6	1997	93	05-28-1978	25	05-01-1978
JUN	71.1	1971	60.7	1982	99	06-20-1988	33	06-03-1990
JUL	74.6	1999	65.6	1992	101	07-14-1995	42	07-05-1972
AUG	74.0	1995	63.7	1992	100	08-01-1988	38	08-27-1986
SEP	66.0	1978	54.0	1993	95	09-08-1978	24	09-30-1993
OCT	58.1	1971	41.7	1988	87	10-01-1971	14	10-30-1988
NOV	45.2	2001	26.6	1996	74	11-10-1999	-10	11-29-1976
DEC	30.7	2001	10.0	1985	66	12-06-2001	-25	12-24-1983

Annual	50.1	1998	40.5	1984	101	07-14-1995	-36	01-19-1994
Winter	28.2	1998	13.1	1979	66	12-06-1901	-36	01-19-1994
Spring	53.9	1977	39.4	1996	93	05-28-1978	-10	03-05-1978
Summer	72.1	1995	64.4	1992	101	07-14-1995	33	06-03-1990
Fall	53.8	1971	44.1	1993	95	09-08-1978	-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	21.5	30.8	10.6
FEB	0.0	15.2	27.1	6.5
MAR	0.0	5.6	25.5	1.1
APR	0.0	0.4	11.9	0.0
MAY	0.3	0.0	1.4	0.0
JUN	2.0	0.0	0.0	0.0
JUL	4.0	0.0	0.0	0.0
AUG	2.0	0.0	0.0	0.0
SEP	0.4	0.0	0.8	0.0
OCT	0.0	0.0	9.2	0.0
NOV	0.0	4.3	22.1	0.3
DEC	0.0	15.9	29.9	5.7

Annual	8.6	63.4	159.7	24.4
Winter	0.0	52.6	87.8	22.8
Spring	0.3	6.0	38.9	1.1
Summer	8.0	0.0	0.0	0.0
Fall	0.4	4.3	32.1	0.3