Historical Climate Data

Temperature Summary
Station: 475120 MARSHFIELD EXP FARM, WI
1971-2000 NCDC Normals

Element	JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC	ANN
Max °F	21.2	27.5	39.0	54.9	67.6	76.9	81.1	78.4	69.3	57.7	40.0	25.8	53.3
Min °F	2.1	7.6	19.6	32.7	44.0	53.7	58.4	56.0	46.3	35.4	22.6	8.7	32.3
Mean °F	11.7	17.6	29.3	43.8	55.8	65.3	69.8	67.2	57.8	46.6	31.3	17.3	42.8
HDD base 65	1654	1329	1107	637	316	79	12	57	232	572	1012	1480	8487
CDD base 65	0	0	0	1	29	88	163	125	16	0	0	0	422

Temperature Extremes
Period of Record: 1913-2001

Month	High Mean°F	Year	Low Mean°F	Year	1-Day Max°F	Date	1-Day Min°F	Date
JAN	24.6	1990	1.2	1929	55	01-25-1981	-37	01-23-1963
FEB	30.6	1998	1.1	1936	58	02-27-2000	-33	02-01-1918
MAR	39.9	1946	20.0	1960	80	03-29-1986	-28	03-01-1962
APR	52.9	1915	35.3	1950	91	04-22-1980	-1	04-01-1924
MAY	64.3	1977	47.7	1924	105	05-31-1934	19	05-09-1966
JUN	72.0	1933	56.6	1969	100	06-01-1934	26	06-12-1927
JUL	75.2	1936	64.4	1924	104	07-13-1936	38	07-19-1929
AUG	74.3	1995	60.9	1915	102	08-02-1988	28	08-30-1915
SEP	65.1	1931	51.8	1918	97	09-06-1922	20	09-29-1967
OCT	57.2	1947	36.6	1917	90	10-01-1976	1	10-30-1925
NOV	43.0	2001	21.5	1959	80	11-10-1930	-18	11-24-1950
DEC	28.9	1923	8.0	1919	63	12-04-1998	-29	12-26-1914

Annual	49.8	1913	38.4	1917	105	05-31-1934	-37	01-23-1963
Winter	25.6	1998	7.9	1917	63	12-04-1998	-37	01-23-1963
Spring	50.7	1977	37.5	1950	105	05-31-1934	-28	03-01-1962
Summer	72.5	1995	61.5	1915	104	07-13-1936	26	06-12-1927
Fall	52.2	1931	40.7	1959	97	09-06-1922	-18	11-24-1950

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	23.9	30.9	12.9
FEB	0.0	16.5	27.5	7.3
MAR	0.0	6.9	26.7	2.3
APR	0.0	0.5	14.9	0.0
MAY	0.0	0.0	2.8	0.0
JUN	1.8	0.0	0.0	0.0
JUL	3.5	0.0	0.0	0.0
AUG	1.9	0.0	0.0	0.0
SEP	0.4	0.0	1.4	0.0
OCT	0.0	0.0	10.8	0.0
NOV	0.0	6.4	24.5	0.6
DEC	0.0	20.5	30.6	7.5

Annual	7.8	74.7	170.8	30.7
Winter	0.0	60.9	88.9	27.7
Spring	0.1	7.4	44.5	2.3
Summer	7.2	0.0	0.0	0.0
Fall	0.5	6.4	36.9	0.6