Historical Climate Data

Temperature Summary
Station: 474821 LONE ROCK TRI CO, WI

1971-2000 NCDC Normals

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Max °F 24.5 30.4 42.3 56.8 69.7 78.8 82.4 80.3 72.3 60.5 43.9 30.0 56.0
Min °F 3.1 8.1 21.2 33.1 44.8 55.4 58.6 56.1 46.6 35.3 24.3 11.0 33.1
Mean °F 13.8 19.3 31.8 45.0 57.3 67.1 70.5 68.2 59.5 47.9 34.1 20.5 44.6
HDD
base 65		 1587 1281 1032 602 277 49 15 52 193 530 926 1379 7923
CDD
base 65		 0 0 0 1 36 112 186 153 28 1 0 0 517

Temperature Extremes
Period of Record: 1948-2001

Month High
Mean°F		 Year Low
Mean°F		 Year 1-Day
Max°F		 Date 1-Day
Min°F		 Date
JAN 23.7 1964 -0.9 1977 56 01-26-1973 -53 01-30-1951
FEB 32.8 1954 7.9 1979 63 02-27-2000 -42 02-02-1951
MAR 42.6 1973 20.1 1960 80 03-30-1967 -39 03-01-1962
APR 52.7 1955 39.4 1950 97 04-23-1980 -3 04-07-1982
MAY 65.9 1977 52.6 1954 93 05-30-1953 22 05-10-1966
JUN 72.3 1971 61.4 1969 98 06-19-1953 34 06-11-1972
JUL 77.5 1955 66.8 1962 101 07-30-1955 40 07-15-1967
AUG 73.8 1955 63.7 1967 101 08-24-1948 37 08-20-1950
SEP 65.7 1978 55.4 1974 100 09-09-1955 20 09-29-1949
OCT 58.8 1963 41.0 1952 94 10-06-1963 8 10-29-1952
NOV 45.8 2001 25.0 1951 78 11-03-1964 -18 11-26-1977
DEC 30.0 1965 11.4 1963 64 12-03-1951 -36 12-27-1950
 
Annual 48.6 1973 42.5 1951 101 07-30-1955 -53 01-30-1951
Winter 25.9 1983 9.4 1979 64 12-03-1951 -53 01-30-1951
Spring 52.7 1977 41.5 1975 97 04-23-1980 -39 03-01-1962
Summer 72.1 1955 66.3 1967 101 07-30-1955 34 06-11-1972
Fall 53.3 1963 42.5 1976 100 09-09-1955 -18 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 22.1 30.7 14.8
FEB 0.0 15.8 27.6 10.9
MAR 0.0 5.3 25.8 2.9
APR 0.1 0.4 13.9 0.2
MAY 0.8 0.0 2.4 0.0
JUN 2.1 0.0 0.0 0.0
JUL 4.7 0.0 0.0 0.0
AUG 2.1 0.0 0.0 0.0
SEP 1.1 0.0 1.5 0.0
OCT 0.0 0.0 12.3 0.0
NOV 0.0 3.8 22.9 0.7
DEC 0.0 16.2 29.5 6.7
 
Annual 11.1 63.0 163.5 35.7
Winter 0.0 54.1 87.8 32.7
Spring 0.9 5.8 42.0 3.1
Summer 9.0 0.0 0.0 0.0
Fall 1.2 3.8 36.0 0.7