Historical Climate Data

Temperature Summary
Station: 473244 GRANTSBURG, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	19.5	26.9	38.8	55.2	68.9	76.1	80.3	77.9	68.0	56.2	38.3	24.2	52.5
Min °F	-3.2	3.6	16.9	30.5	43.0	51.9	56.9	54.8	45.0	33.7	20.0	3.6	29.7
Mean °F	8.2	15.3	27.9	42.9	56.0	64.0	68.6	66.4	56.5	45.0	29.2	13.9	41.2
HDD base 65	1765	1392	1152	664	314	99	31	67	271	622	1071	1584	9032
CDD base 65	0	0	0	1	34	70	143	108	16	0	0	0	372

Temperature Extremes
Period of Record: 1950-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	21.4	1990	-2.8	1982	51	01-25-1981	-44	01-14-1965
FEB	30.8	1998	4.0	1989	57	02-23-1958	-42	02-02-1996
MAR	38.5	2000	16.8	1960	78	03-08-2000	-39	03-01-1962
APR	51.4	1987	37.3	1975	95	04-22-1980	-2	04-01-1975
MAY	64.8	1977	49.0	1954	95	05-02-1959	15	05-03-1967
JUN	68.9	1995	57.7	1958	98	06-30-1963	29	06-02-1964
JUL	73.9	1955	62.7	1992	100	07-26-1955	36	07-29-1952
AUG	71.6	2001	62.2	1950	98	08-16-1950	32	08-31-1970
SEP	62.8	1998	51.2	1965	95	09-02-1961	21	09-30-1956
OCT	56.3	1963	39.7	1952	87	10-02-1953	7	10-20-1952
NOV	43.0	2001	20.3	1959	72	11-04-1978	-24	11-30-1964
DEC	25.6	2001	0.1	1983	60	12-03-1982	-40	12-25-1968

Annual	46.8	1998	38.2	1985	100	07-26-1955	-44	01-14-1965
Winter	24.2	1998	6.2	1977	60	12-03-1982	-44	01-14-1965
Spring	49.2	1977	37.1	1956	95	04-22-1980	-39	03-01-1962
Summer	70.4	1988	62.8	1992	100	07-26-1955	29	06-02-1964
Fall	52.3	1963	40.1	1951	95	09-02-1961	-24	11-30-1964

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	26.2	31.0	17.6
FEB	0.0	17.5	27.8	11.5
MAR	0.0	8.0	28.4	3.9
APR	0.0	0.8	17.1	0.0
MAY	0.2	0.0	3.0	0.0
JUN	1.1	0.0	0.0	0.0
JUL	2.1	0.0	0.0	0.0
AUG	1.1	0.0	0.0	0.0
SEP	0.1	0.0	2.0	0.0
OCT	0.0	0.2	13.8	0.0
NOV	0.0	9.4	26.4	1.8
DEC	0.0	22.5	30.9	12.0

Annual	4.7	84.5	180.3	47.1
Winter	0.0	66.2	89.7	41.4
Spring	0.2	8.9	48.9	4.0
Summer	4.3	0.0	0.0	0.0
Fall	0.1	9.3	42.0	1.7