Climate in Lewistown, Montana

Lewistown, Montana gets 16 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Lewistown averages 72 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 196 sunny days per year in Lewistown. The US average is 205 sunny days.

Lewistown gets some kind of precipitation, on average, 103 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 81 degrees
Winter Low: the January low is 14
Rain: averages 16 inches of rain a year
Snow: averages 72 inches of snow a year

BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Lewistown is 6.5 (10=best), which means it is less comfortable than most places in Montana.

August is the hottest month for Lewistown with an average high temperature of 81.1°, which ranks it as cooler than most places in Montana. In Lewistown, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lewistown are July, August and June.

January has the coldest nighttime temperatures for Lewistown with an average of 13.5°. This is about average compared to other places in Montana.

In Lewistown, there are 10.5 days annually when the high temperature is over 90°, which is cooler than most places in Montana.

In Lewistown, there are 175.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Montana.

In Lewistown, there are 19.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Montana.

June is the wettest month in Lewistown with 2.7 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Autumn with 40% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 15.8 inches in Lewistown means that it is wetter than most places in Montana.

June is the rainiest month in Lewistown with 12.7 days of rain, and February is the driest month with only 6.2 rainy days. There are 102.6 rainy days annually in Lewistown, which is rainier than most places in Montana. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 19% chance of a rainy day.

An annual snowfall of 72.3 inches in Lewistown means that it is snowier than most places in Montana. March is the snowiest month in Lewistown with 14.2 inches of snow, and 9 months of the year have significant snowfall.

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