Thermopolis Average Rainfall by Month

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

Average temperature by month

What's the Rainiest Month in Thermopolis?

In Thermopolis, May has the greatest precipitation of any month. On average, Thermopolis gets 1.9 inches of precipitation in May.

However, June is the month with the greatest chance of precipitation. 24.5% of days in June will have at least some rain.

What's the Driest Month in Thermopolis?

In Thermopolis, January has the least precipitation of any month. On average, Thermopolis gets 0.37 inches of precipitation in January.

January is also the month where rain is least common. Only 9.8% of days in January will have measurable rain or snow.

Month	Precipitation	% Chance
January	0.37 in	9.8
February	0.39 in	11.9
March	0.83 in	13.1
April	1.45 in	21.6
May	1.92 in	24.3
June	1.29 in	24.5
July	0.76 in	16.3
August	0.45 in	14.0
September	0.97 in	16.9
October	1.18 in	16.0
November	0.67 in	13.3
December	0.35 in	10.0
Year	10.70 in	16.1

Weather Station Details

Years	Station	Coordinates
1899–2024	Thermopolis	location