Historical Climate Data

Temperature Summary
Station: 476939 RAINBOW RESERVOIR, WI

1971-2000 NCDC Normals

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Max °F 20.5 26.8 37.2 51.4 65.7 73.2 77.2 75.0 65.8 53.8 37.3 24.6 50.7
Min °F -1.7 1.6 12.2 25.6 38.5 48.3 53.2 51.8 43.2 32.8 20.4 6.0 27.7
Mean °F 9.4 14.2 24.7 38.5 52.1 60.8 65.2 63.4 54.5 43.3 28.9 15.3 39.2
HDD
base 65		 1726 1423 1250 795 418 164 78 112 319 674 1085 1541 9585
CDD
base 65		 0 0 0 0 18 36 83 63 4 0 0 0 204

Temperature Extremes
Period of Record: 1948-1996

Month High
Mean°F		 Year Low
Mean°F		 Year 1-Day
Max°F		 Date 1-Day
Min°F		 Date
JAN 19.6 1990 -1.6 1977 54 01-26-1973 -42 01-30-1950
FEB 25.7 1954 3.9 1979 58 02-25-1976 -42 02-18-1979
MAR 33.7 1973 16.2 1960 70 03-08-1987 -40 03-01-1962
APR 47.6 1955 30.3 1950 90 04-23-1980 -9 04-08-1982
MAY 61.2 1977 45.4 1983 90 05-03-1955 17 05-10-1966
JUN 66.6 1949 54.1 1982 97 06-30-1963 26 06-14-1965
JUL 71.7 1955 58.4 1992 96 07-26-1955 33 07-04-1972
AUG 69.0 1955 58.6 1977 95 08-02-1964 32 08-29-1965
SEP 60.4 1948 48.9 1974 94 09-08-1976 22 09-29-1949
OCT 53.9 1963 37.9 1987 87 10-02-1976 9 10-23-1969
NOV 36.4 1953 20.1 1995 78 11-01-1950 -16 11-28-1976
DEC 24.8 1959 4.5 1983 59 12-03-1982 -30 12-20-1983
 
Annual 42.7 1987 35.2 1982 97 06-30-1963 -42 01-30-1950
Winter 19.4 1983 5.2 1979 59 12-03-1982 -42 01-30-1950
Spring 44.8 1977 32.8 1996 90 04-23-1980 -40 03-01-1962
Summer 67.7 1955 58.2 1992 97 06-30-1963 26 06-14-1965
Fall 48.9 1963 37.6 1976 94 09-08-1976 -16 11-28-1976

Temperature Threshold Climatology
Derived from 1971-1996 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 27.1 30.9 16.9
FEB 0.0 20.1 28.2 14.3
MAR 0.0 10.6 29.7 7.2
APR 0.0 1.7 23.5 0.3
MAY 0.0 0.0 10.3 0.0
JUN 0.7 0.0 0.5 0.0
JUL 0.9 0.0 0.0 0.0
AUG 0.3 0.0 0.0 0.0
SEP 0.0 0.0 3.3 0.0
OCT 0.0 0.4 17.2 0.0
NOV 0.0 11.0 27.4 1.6
DEC 0.0 24.9 30.9 11.8
 
Annual 1.9 95.7 201.6 52.2
Winter 0.0 72.1 90.0 43.0
Spring 0.0 12.3 63.5 7.5
Summer 1.9 0.0 0.5 0.0
Fall 0.0 11.3 47.4 1.6