Climate in Thermopolis, Wyoming

Thermopolis, WY has a semi-arid climate with mild temperatures and low humidity throughout the year. Summers are generally warm and dry, while winters tend to be cold and snowy. The area can experience occasional strong winds, but overall it is quite pleasant for most of the year. Precipitation is fairly consistent throughout the year, with an average of about 12 inches per year. Some areas of Thermopolis receive more rain than others, and snowfall in the winter months has been known to reach up to two feet in a single day.

Thermopolis, Wyoming gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Thermopolis averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 235 sunny days per year in Thermopolis. The US average is 205 sunny days.

Thermopolis gets some kind of precipitation, on average, 61 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.

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Weather Highlights

Summer High: the July high is around 90 degrees
Winter Low: the January low is 7
Rain: averages 11 inches of rain a year
Snow: averages 22 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Thermopolis is 7.0 (10=best), which means it is one of the most pleasant places in Wyoming.

June, September and May are the most pleasant months in Thermopolis, while December and January are the least comfortable months.

July is the hottest month for Thermopolis with an average high temperature of 90.4°, which ranks it as one of the hottest places in Wyoming. In Thermopolis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Thermopolis are September, June and May.

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In Thermopolis, there are 41.4 days annually when the high temperature is over 90°, which is one of the hottest places in Wyoming.

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January has the coldest nighttime temperatures for Thermopolis with an average of 6.5°. This is colder than most places in Wyoming.

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In Thermopolis, there are 181.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wyoming.

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In Thermopolis, there are 23.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

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Humidity is low in Thermopolis, and some people might find the dryness to be uncomfortable. Days with noticeable humidity are rare throughout the year. A very dry climate can lead to cracked, itchy skin and dry eyes.

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May is the wettest month in Thermopolis with 1.8 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Summer with 37% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 11.1 inches in Thermopolis means that it is drier than most places in Wyoming.

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May is the rainiest month in Thermopolis with 8.1 days of rain, and January is the driest month with only 3.2 rainy days. There are 60.8 rainy days annually in Thermopolis, which is less rainy than most places in Wyoming. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 16% chance of a rainy day.

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An annual snowfall of 21.8 inches in Thermopolis means that it is one of the least snowy places in Wyoming. January is the snowiest month in Thermopolis with 4.1 inches of snow, and 7 months of the year have significant snowfall.

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