The remote server returned an error: (400) Bad Request.The remote server returned an error: (400) Bad Request. 2025 Compare Climate & Weather: Rock Springs, WY vs Thermopolis, WY

2025 Compare Climate & Weather:
Rock Springs, WY vs Thermopolis, WY

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Highlights

On average, there are 235 sunny days per year in Thermopolis. Rock Springs averages 238 sunny days per year. The US average is 205 sunny days.

Thermopolis, Wyoming gets 11.1 inches of rain, on average, per year. Rock Springs, Wyoming gets 8.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Thermopolis averages 21.8 inches of snow per year. Rock Springs averages 40.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Rock Springs, Wyoming
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 10.1
Rain: averages 8.9 inches of rain a year
Snow: averages 40.6 inches of snow a year

BestPlaces Comfort Index
Thermopolis

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

7 / 10
June, September and May are the most pleasant months in Thermopolis, while December and January are the least comfortable months.

Rock Springs

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

6.8 / 10
June, August and July are the most pleasant months in Rock Springs, while December and January are the least comfortable months.

Average Monthly High / Low (°F)
MonthRock Springs, WYThermopolis, WY
January33° / 10°36° / 7°
February37° / 13°41° / 12°
March47° / 23°52° / 22°
April58° / 30°61° / 31°
May67° / 38°71° / 41°
June77° / 46°81° / 49°
July86° / 53°90° / 56°
August84° / 51°89° / 54°
September74° / 42°77° / 43°
October61° / 32°62° / 32°
November44° / 21°47° / 19°
December33° / 11°34° / 7°
Hot, Freezing, Rainy, Snowy Days: Rock Springs / Thermopolis
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 031 / 315 / 35 / 2
February0 / 028 / 285 / 35 / 2
March0 / 027 / 277 / 54 / 2
April0 / 019 / 167 / 73 / 1
May0 / 15 / 38 / 81 / 0
June1 / 60 / 06 / 80 / 0
July8 / 170 / 06 / 50 / 0
August5 / 150 / 06 / 50 / 0
September0 / 32 / 36 / 50 / 0
October0 / 016 / 166 / 51 / 1
November0 / 027 / 275 / 44 / 2
December0 / 031 / 316 / 45 / 3
July is the hottest month for Rock Springs with an average high temperature of 85.8°, which ranks it as about average compared to other places in Wyoming. In Rock Springs, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rock Springs are June, September and August.

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.
January has the coldest nighttime temperatures for Rock Springs with an average of 10.1°. This is about average compared to other places in Wyoming.

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

In Rock Springs, there are 14.2 days annually when the high temperature is over 90°, which is about average compared to other 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 Rock Springs, there are 186.1 days annually when the nighttime low temperature falls below freezing, 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 Rock Springs, there are 15.3 days annually when the nighttime low temperature falls below zero°, which is warmer 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.

May is the wettest month in Rock Springs with 1.3 inches of rain, and the driest month is January with 0.4 inches. The wettest season is Summer with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 8.9 inches in Rock Springs means that it is drier 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 rainiest month in Rock Springs with 7.9 days of rain, and February is the driest month with only 5.1 rainy days. There are 72.1 rainy days annually in Rock Springs, which is about average compared to other places in Wyoming. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

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.

An annual snowfall of 40.6 inches in Rock Springs means that it is less snowy than most places in Wyoming.

An annual snowfall of 21.8 inches in Thermopolis means that it is one of the least snowy places in Wyoming.
February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.

January is the snowiest month in Thermopolis with 4.1 inches of snow, and 7 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Rock Springs    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Rock Springs

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Reviews for Thermopolis    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Thermopolis

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Zips In Rock Springs, Wyoming
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