About Climate Summary Tables

Precipitation Summary for Station USW00014839 - MILWAUKEE MITCHELL AIRPORT, WI

1991-2020 NCEI Normals
Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
Precip
(in.)		 1.79 1.69 2.2 3.86 3.54 4.38 3.4 3.65 3.16 2.78 2.24 1.88 34.57

 

Precipitation Extremes - Period of Record: 1927-05-01 to 2025-07-03
*Based on latest available data for this station
Month High
(in.)		 Year Low
(in.)		 Year 1-Day
Max (in.)		 Date
January 4.38 1999 0.31 1981 2.42 1938-01-24
February 3.94 1986 0.05 1969 2.06 2023-02-27
March 6.93 1976 0.18 1936 2.31 1976-03-04
April 7.38 2013 0.68 1932 3.18 2015-04-09
May 9.68 1933 0.5 1988 2.99 2020-05-17
June 12.27 2008 0.7 1988 4.93 2008-06-07
July 10.93 2010 0.18 1936 5.61 2010-07-22
August 9.05 1987 0.46 1948 6.81 1986-08-06
September 9.87 1941 0.02 1979 4.78 2022-09-11
October 7.03 1991 0.15 1956 2.33 1991-10-24
November 7.11 1985 0.14 1936 2.22 1998-11-10
December 5.42 1987 0.29 1976 2.24 1982-12-02
Annual 44.44 2008 19.1 1963 6.81 1986-08-06
Winter 10.51 1974 1.53 2003 2.42 1938-01-24
Spring 15.71 1976 3.11 1936 3.18 2015-04-09
Summer 19.48 1986 3.19 1934 6.81 1986-08-06
Autumn 15.94 1985 2.07 1956 4.78 2022-09-11

 

Precipitation Threshold Climatology Derived from 1991-2020 Normals
*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"
January 11.4 5 0.7 0.1
February 10 4.1 1 0.2
March 10.7 5.3 1.5 0.2
April 12.2 7.2 2.8 0.9
May 11.7 7.3 2.5 0.7
June 11.1 7.3 3 1.1
July 9.5 5.7 2.1 0.8
August 9.5 6.2 2.3 0.8
September 8.6 5.4 2.2 0.9
October 10.3 5.8 1.8 0.5
November 10.2 5.1 1.2 0.4
December 10.3 4.8 1 0.2
Annual 125.5 69.2 22.1 6.8
Winter 31.7 13.9 2.7 0.5
Spring 34.6 19.8 6.8 1.8
Summer 30.1 19.2 7.4 2.7
Autumn 18 14.9 8.1 4.6