2025 Compare Climate & Weather:
Thermopolis, WY vs Lander, WY

Highlights

On average, there are 239 sunny days per year in Lander. Thermopolis averages 235 sunny days per year. The US average is 205 sunny days.

Lander, Wyoming gets 11.3 inches of rain, on average, per year. Thermopolis, Wyoming gets 11.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lander averages 58.4 inches of snow per year. Thermopolis averages 21.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lander, Wyoming
Summer High: the July high is around 86.7 degrees
Winter Low: the January low is 6.8
Rain: averages 11.3 inches of rain a year
Snow: averages 58.4 inches of snow a year

Thermopolis, Wyoming
Summer High: the July high is around 90.4 degrees
Winter Low: the January low is 6.5
Rain: averages 11.1 inches of rain a year
Snow: averages 21.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Lander is 6.8 (10=best), which means it is more comfortable than most places in Wyoming.

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

Today's Weather - Thermopolis, WY

77°F

Today's Weather - Lander, WY

72°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Thermopolis / Lander

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.

July is the hottest month for Lander with an average high temperature of 86.7°, which ranks it as warmer than most places in Wyoming. In Lander, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lander are June, September and August.

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

January has the coldest nighttime temperatures for Lander with an average of 6.8°. This is colder than most places in Wyoming.

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

In Lander, there are 22.0 days annually when the high temperature is over 90°, which is about average compared to other places in Wyoming.

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

In Lander, there are 195.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Wyoming.

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

In Lander, there are 25.5 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

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.


May is the wettest month in Lander with 2.0 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 39% of yearly precipitation and 12% occurs in Spring, which is the driest season. The annual rainfall of 11.3 inches in Lander means that it is drier than most places in Wyoming.

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.

May is the rainiest month in Lander with 6.9 days of rain, and January is the driest month with only 2.7 rainy days. There are 53.2 rainy days annually in Lander, which is less rainy than most places in Wyoming. The rainiest season is Summer when it rains 33% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 21.8 inches in Thermopolis means that it is one of the least snowy places in Wyoming.

An annual snowfall of 58.4 inches in Lander means that it is snowier than most 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.

April is the snowiest month in Lander with 10.3 inches of snow, and 9 months of the year have significant snowfall.