Historical Climate Data

Precipitation Summary
Station: 478937 WAUKESHA WATER WORKS, WI

1971-2000 NCDC Normals

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Precip (in) 1.48 1.31 2.28 3.53 3.02 3.78 3.83 4.77 3.52 2.62 2.63 1.87 34.64

Precipitation Extremes
Period of Record: 1896-2001

Month High (in) Year Low (in) Year 1-Day
Max (in)		 Date
JAN 5.60 1918 0.18 1928 2.66 01-24-1938
FEB 3.20 1997 0.00 1987 1.85 02-23-1922
MAR 5.54 1976 0.14 1910 2.10 03-04-1976
APR 7.88 1973 0.21 1932 3.37 04-21-1973
MAY 8.74 1933 0.99 1994 3.05 05-21-1934
JUN 7.94 1969 0.53 1995 4.05 06-22-1940
JUL 11.41 1952 0.41 1916 5.09 07-18-1952
AUG 10.83 1995 0.56 1969 3.52 08-20-1995
SEP 10.21 1961 0.00 1979 3.70 09-13-1961
OCT 5.79 1985 0.06 1924 2.44 10-17-1905
NOV 6.47 1934 0.22 1904 2.42 11-01-1982
DEC 4.21 1971 0.25 1960 1.89 12-26-1942
 
Annual 44.73 2000 16.90 1901 5.09 07-18-1952
Winter 8.83 1938 1.27 1961 2.66 01-24-1938
Spring 15.17 1973 3.04 1932 3.37 04-21-1973
Summer 19.83 1954 4.13 1901 5.09 07-18-1952
Fall 16.26 1985 1.00 1908 3.70 09-13-1961

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 10.3 4.4 0.7 0.2
FEB 7.8 3.7 0.8 0.1
MAR 9.3 5.4 1.3 0.1
APR 11.7 6.8 2.4 0.7
MAY 10.6 6.6 2.0 0.6
JUN 10.0 6.3 2.8 1.0
JUL 10.0 6.5 2.7 1.1
AUG 9.7 7.5 3.3 1.5
SEP 9.1 6.0 2.2 0.9
OCT 9.0 5.0 1.8 0.6
NOV 9.8 5.6 1.6 0.4
DEC 9.9 4.7 1.0 0.2
 
Annual 117.0 68.6 22.6 7.6
Winter 28.0 12.9 2.5 0.5
Spring 31.5 18.8 5.7 1.4
Summer 29.7 20.3 8.7 3.6
Fall 27.9 16.5 5.6 1.9