Historical Climate Data

Temperature Summary
Station: 219067 WINONA, MN
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	25.9	32.8	44.3	59.7	73.0	81.2	85.3	82.6	74.4	61.8	44.3	30.3	58.0
Min °F	9.2	15.8	27.0	39.8	51.3	60.9	66.3	63.7	54.4	42.8	29.8	15.9	39.7
Mean °F	17.6	24.3	35.7	49.8	62.2	71.1	75.8	73.2	64.4	52.3	37.1	23.1	48.9
HDD base 65	1472	1139	910	468	176	22	5	8	102	400	839	1298	6839
CDD base 65	0	0	0	11	88	203	339	259	84	6	0	0	990

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	29.5	1990	-1.0	1912	64	01-25-1944	-35	01-12-1912
FEB	34.7	1998	4.6	1936	68	02-19-1981	-33	02-01-1918
MAR	46.6	1910	20.8	1960	84	03-23-1910	-28	03-01-1962
APR	57.1	1915	37.8	1975	96	04-30-1952	4	04-01-1924
MAY	70.4	1934	50.2	1907	107	05-31-1934	21	05-01-1956
JUN	81.4	1933	61.0	1969	106	06-28-1931	35	06-09-1937
JUL	81.0	1936	68.0	1992	108	07-12-1936	43	07-01-1924
AUG	78.8	1947	65.2	1915	103	08-24-1948	33	08-30-1915
SEP	70.6	1931	55.0	1918	102	09-06-1922	25	09-28-1942
OCT	60.9	1947	39.7	1917	93	10-07-1963	7	10-30-1925
NOV	50.0	2001	26.0	1896	84	11-01-1950	-11	11-26-1977
DEC	33.6	1931	4.3	1985	65	12-05-1998	-28	12-19-1983

Annual	52.7	1931	40.9	1929	108	07-12-1936	-35	01-12-1912
Winter	29.2	1998	7.9	1979	68	02-19-1981	-35	01-12-1912
Spring	53.8	1977	39.8	1975	107	05-31-1934	-28	03-01-1962
Summer	77.4	1933	65.8	1915	108	07-12-1936	33	08-30-1915
Fall	55.3	1953	42.3	1896	102	09-06-1922	-11	11-26-1977

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	21.4	30.6	12.6
FEB	0.0	14.1	26.8	7.2
MAR	0.0	5.2	24.5	1.6
APR	0.3	0.3	9.8	0.0
MAY	0.8	0.0	0.9	0.0
JUN	3.6	0.0	0.0	0.0
JUL	6.8	0.0	0.0	0.0
AUG	3.3	0.0	0.0	0.0
SEP	1.0	0.0	0.8	0.0
OCT	0.1	0.0	7.7	0.0
NOV	0.0	4.7	21.4	0.5
DEC	0.0	17.1	29.8	7.0

Annual	15.9	65.1	155.3	30.0
Winter	0.0	52.4	87.2	26.7
Spring	1.1	5.5	35.9	1.6
Summer	13.9	0.0	0.0	0.0
Fall	1.0	4.7	29.7	0.5