Green Bay Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Green Bay, Wisconsin. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Green Bay?

In Green Bay, June has the greatest precipitation of any month. On average, Green Bay gets 4.1 inches of precipitation in June.

However, May is the month with the greatest chance of precipitation. 40.0% of days in May will have at least some rain or snow.

What's the Driest Month in Green Bay?

In Green Bay, February has the least precipitation of any month. On average, Green Bay gets 1.20 inches of precipitation in February.

February is also the month where rain is least common. 31.3% of days in February will have measurable rain or snow.

Month	Precipitation	% Chance
January	1.38 in	34.9
February	1.20 in	31.3
March	1.96 in	33.5
April	3.00 in	38.9
May	3.35 in	40.0
June	4.10 in	37.0
July	3.62 in	34.6
August	3.39 in	33.0
September	3.19 in	32.3
October	2.67 in	33.4
November	1.98 in	32.1
December	1.75 in	33.9
Year	31.60 in	34.6

Weather Station Details

Years	Station	Coordinates
1886–2024	Green Bay	location