Historical Climate Data

Temperature Summary
Station: 473453 HARTFORD SEWAGE PLANT, WI

1971-2000 NCDC Normals

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Max °F 24.5 29.5 40.9 54.3 67.5 77.1 81.1 78.6 70.4 58.9 43.0 29.9 54.6
Min °F 6.5 11.3 23.1 33.7 44.5 53.4 58.3 56.4 47.8 37.3 26.0 13.4 34.3
Mean °F 15.5 20.4 32.0 44.0 56.0 65.3 69.7 67.5 59.1 48.1 34.5 21.7 44.5
HDD
base 65		 1536 1249 1022 630 310 84 18 53 197 525 915 1345 7884
CDD
base 65		 0 0 0 1 31 91 164 131 21 1 0 0 440

Temperature Extremes
Period of Record: 1897-2001

Month High
Mean°F		 Year Low
Mean°F		 Year 1-Day
Max°F		 Date 1-Day
Min°F		 Date
JAN 30.2 1998 3.1 1977 55 01-19-1996 -35 01-11-1979
FEB 40.2 1998 11.0 1979 63 02-27-2000 -34 02-02-1959
MAR 40.2 1973 19.6 1960 81 03-29-1986 -23 03-01-1962
APR 52.1 1985 39.6 1975 88 04-22-1980 1 04-07-1982
MAY 63.4 1977 49.8 1897 94 05-30-1999 20 05-01-1978
JUN 70.8 1999 59.5 1897 100 06-21-1988 31 06-09-1988
JUL 77.2 1999 64.5 1992 105 07-31-1999 39 07-01-1965
AUG 75.5 1959 62.3 1897 101 08-01-1988 36 08-27-1986
SEP 65.3 1971 54.9 1993 97 09-01-1953 23 09-24-1976
OCT 59.8 1963 41.7 1988 89 10-01-1982 9 10-27-1898
NOV 44.6 2001 26.0 1995 75 11-10-1999 -11 11-29-1976
DEC 31.6 1959 9.6 1985 65 12-06-2001 -29 12-19-1983
 
Annual 50.8 1998 38.8 1898 105 07-31-1999 -35 01-11-1979
Winter 32.3 1998 11.4 1977 65 12-06-1901 -35 01-11-1979
Spring 51.4 1977 38.7 1897 94 05-30-1999 -23 03-01-1962
Summer 72.3 1955 63.0 1992 105 07-31-1999 31 06-09-1988
Fall 54.5 1963 43.2 1976 97 09-01-1953 -11 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 20.9 30.5 10.5
FEB 0.0 15.0 26.7 6.8
MAR 0.0 5.8 25.4 1.2
APR 0.0 0.3 13.2 0.0
MAY 0.2 0.0 2.9 0.0
JUN 2.1 0.0 0.0 0.0
JUL 4.2 0.0 0.0 0.0
AUG 1.9 0.0 0.0 0.0
SEP 0.6 0.0 1.1 0.0
OCT 0.0 0.0 9.2 0.0
NOV 0.0 4.2 21.4 0.3
DEC 0.0 15.7 29.2 5.6
 
Annual 8.9 61.9 159.0 24.4
Winter 0.0 51.5 86.4 23.0
Spring 0.2 6.1 41.3 1.2
Summer 8.1 0.0 0.0 0.0
Fall 0.6 4.2 31.7 0.3