2025 Compare Climate & Weather:
Rock Springs, WY vs Twisp, WA

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Highlights

On average, there are 189 sunny days per year in Twisp. Rock Springs averages 238 sunny days per year. The US average is 205 sunny days.

Twisp, Washington gets 16.7 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.

Twisp averages 71.1 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

Twisp, Washington
Summer High: the July high is around 84 degrees
Winter Low: the January low is 16.1
Rain: averages 16.7 inches of rain a year
Snow: averages 71.1 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

Twisp

The annual BestPlaces Comfort Index for Twisp is 6.6 (10=best), which means it is one of the least comfortable places in Washington.

6.6 / 10

July, August and September are the most pleasant months in Twisp, 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)

Month	Rock Springs, WY	Twisp, WA
January	33° / 10°	31° / 16°
February	37° / 13°	39° / 19°
March	47° / 23°	49° / 27°
April	58° / 30°	60° / 33°
May	67° / 38°	69° / 40°
June	77° / 46°	76° / 47°
July	86° / 53°	84° / 52°
August	84° / 51°	84° / 51°
September	74° / 42°	75° / 43°
October	61° / 32°	60° / 33°
November	44° / 21°	40° / 25°
December	33° / 11°	29° / 15°

Hot, Freezing, Rainy, Snowy Days: Rock Springs / Twisp

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	31 / 30	5 / 11	5 / 9
February	0 / 0	28 / 26	5 / 8	5 / 5
March	0 / 0	27 / 26	7 / 8	4 / 2
April	0 / 0	19 / 14	7 / 6	3 / 0
May	0 / 1	5 / 4	8 / 7	1 / 0
June	1 / 2	0 / 0	6 / 7	0 / 0
July	8 / 8	0 / 0	6 / 5	0 / 0
August	5 / 8	0 / 0	6 / 4	0 / 0
September	0 / 2	2 / 2	6 / 4	0 / 0
October	0 / 0	16 / 14	6 / 7	1 / 1
November	0 / 0	27 / 24	5 / 12	4 / 5
December	0 / 0	31 / 30	6 / 12	5 / 11

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.

August is the hottest month for Twisp with an average high temperature of 84.1°, which ranks it as warmer than most places in Washington. In Twisp, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Twisp are June, September and July.

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.

December has the coldest nighttime temperatures for Twisp with an average of 15.1°. This is one of the coldest places in Washington.

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 Twisp, there are 19.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

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 Twisp, there are 170.4 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Washington.

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 Twisp, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

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.

December is the wettest month in Twisp with 2.8 inches of rain, and the driest month is August with 0.5 inches. The wettest season is Spring with 41% of yearly precipitation and 14% occurs in Autumn, which is the driest season. The annual rainfall of 16.7 inches in Twisp means that it is drier than most places in Washington.

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.

November is the rainiest month in Twisp with 12.1 days of rain, and August is the driest month with only 3.9 rainy days. There are 91.8 rainy days annually in Twisp, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 17% 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 71.1 inches in Twisp means that it is one of the snowiest places in Washington.

February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.

December is the snowiest month in Twisp with 25.4 inches of snow, and 6 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

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Reviews for Twisp 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

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2025 Compare Climate & Weather:
Rock Springs, WY vs Twisp, WA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rock Springs / Twisp

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.

December has the coldest nighttime temperatures for Twisp with an average of 15.1°. This is one of the coldest places in Washington.

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 Twisp, there are 19.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

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 Twisp, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

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 71.1 inches in Twisp means that it is one of the snowiest places in Washington.

February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.

December is the snowiest month in Twisp with 25.4 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

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Reviews for Twisp 2 Reviews

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2025 Compare Climate & Weather:Rock Springs, WY vs Twisp, WA

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rock Springs / Twisp

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.December has the coldest nighttime temperatures for Twisp with an average of 15.1°. This is one of the coldest places in Washington.

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 Twisp, there are 19.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

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 Twisp, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

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 71.1 inches in Twisp means that it is one of the snowiest places in Washington.

February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.December is the snowiest month in Twisp with 25.4 inches of snow, and 6 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Rock Springs 2 Reviews

Reviews for Twisp 2 Reviews

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Zips In Rock Springs, Wyoming

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2025 Compare Climate & Weather:
Rock Springs, WY vs Twisp, WA

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.

December has the coldest nighttime temperatures for Twisp with an average of 15.1°. This is one of the coldest places in Washington.

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 Twisp, there are 19.8 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

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 Twisp, there are 9.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Washington.

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 71.1 inches in Twisp means that it is one of the snowiest places in Washington.

February is the snowiest month in Rock Springs with 7.1 inches of snow, and 8 months of the year have significant snowfall.

December is the snowiest month in Twisp with 25.4 inches of snow, and 6 months of the year have significant snowfall.