Billings Average Rainfall by Month

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

Average temperature by month

What's the Rainiest Month in Billings?

In Billings, May has the greatest precipitation of any month. On average, Billings gets 2.4 inches of precipitation in May.

May is also the month where rain is most common. 39.5% of days in May will have at least some rain or snow.

What's the Driest Month in Billings?

In Billings, January has the least precipitation of any month. On average, Billings gets 0.54 inches of precipitation in January.

August is the month with the lowest chance of precipitation. 19.2% of days in August will have measurable rain.

Month	Precipitation	% Chance
January	0.54 in	21.3
February	0.56 in	24.2
March	0.89 in	27.7
April	1.72 in	34.7
May	2.36 in	39.5
June	2.22 in	37.2
July	1.22 in	24.9
August	0.86 in	19.2
September	1.36 in	22.6
October	1.37 in	26.5
November	0.60 in	20.4
December	0.57 in	20.0
Year	14.27 in	26.5

Weather Station Details

Years	Station	Coordinates
1949–2024	Billings Logan International Airport	location
1894–1948	Billings WTP	location