Historical Climate Data

Precipitation Summary
Station: 478905 WASHINGTON ISLAND 1 N, WI

1971-2000 NCDC Normals

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Precip (in) 1.58 0.84 1.67 2.26 2.65 3.20 3.06 3.27 3.34 2.79 2.43 1.45 28.54

Precipitation Extremes
Period of Record: 1944-2001

Month High (in) Year Low (in) Year 1-Day
Max (in)		 Date
JAN 4.06 1999 0.08 1961 2.00 01-18-1996
FEB 2.37 1945 0.00 1982 0.96 02-22-1945
MAR 4.06 1976 0.05 2001 1.25 03-31-1998
APR 4.77 1965 0.26 1989 1.70 04-27-2001
MAY 8.23 1960 0.69 1980 3.21 05-16-1965
JUN 9.92 1990 0.47 1995 2.56 06-26-1969
JUL 10.11 1951 0.42 1967 2.94 07-30-1950
AUG 7.27 1959 0.68 1969 3.03 08-04-1956
SEP 9.74 1959 0.65 1989 3.33 09-08-1959
OCT 5.56 1995 0.00 1952 2.22 10-22-1979
NOV 6.13 1948 0.43 1976 2.11 11-01-1984
DEC 3.17 1971 0.08 1960 1.63 12-28-1959
 
Annual 38.70 1965 16.65 1963 3.33 09-08-1959
Winter 7.30 1967 1.16 1961 2.00 01-18-1996
Spring 13.46 1965 3.34 1946 3.21 05-16-1965
Summer 15.65 1951 3.76 1976 3.03 08-04-1956
Fall 15.82 1959 3.55 1999 3.33 09-08-1959

Precipitation Threshold Climatology
Derived from 1971-2000 Averages


*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding.

Month # Days
Total ≥ 0.01"		 # Days
Total ≥ 0.10"		 # Days
Total ≥ 0.50"		 # Days
Total ≥ 1.00"
JAN 8.2 5.3 0.6 0.1
FEB 5.7 3.2 0.2 0.0
MAR 6.7 4.3 1.0 0.3
APR 7.9 5.3 1.5 0.2
MAY 8.3 6.1 1.8 0.4
JUN 8.8 6.5 2.2 0.7
JUL 9.3 6.2 2.2 0.6
AUG 9.3 6.3 2.4 0.6
SEP 9.7 6.9 2.5 0.7
OCT 8.6 5.9 1.9 0.5
NOV 9.0 6.3 1.3 0.4
DEC 8.1 5.0 0.5 0.0
 
Annual 99.7 67.4 18.3 4.6
Winter 22.1 13.5 1.3 0.1
Spring 22.9 15.7 4.4 0.9
Summer 27.4 19.0 6.8 1.9
Fall 27.4 19.1 5.7 1.6