Plymouth Average Rainfall by Month

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

Average temperature by month

What's the Rainiest Month in Plymouth?

In Plymouth, July has the greatest precipitation of any month. On average, Plymouth gets 4.4 inches of precipitation in July.

However, January is the month with the greatest chance of precipitation. 43.0% of days in January will have at least some rain or snow.

What's the Driest Month in Plymouth?

In Plymouth, February has the least precipitation of any month. On average, Plymouth gets 2.33 inches of precipitation in February.

September is the month with the lowest chance of precipitation. 30.7% of days in September will have measurable rain.

Month	Precipitation	% Chance
January	2.59 in	43.0
February	2.33 in	36.5
March	2.43 in	36.6
April	3.65 in	41.5
May	4.33 in	41.4
June	4.38 in	36.9
July	4.39 in	31.0
August	4.05 in	31.5
September	3.19 in	30.7
October	3.28 in	34.5
November	3.03 in	38.9
December	2.60 in	41.1
Year	40.22 in	37.0

Weather Station Details

Years	Station	Coordinates
1989–2024	Plymouth	location
1894–1989	Plymouth Power Substation	location