2025 Compare Climate & Weather:
Fort Lewis, WA vs Fort Carson, CO

Highlights

On average, there are 252 sunny days per year in Fort Carson. Fort Lewis averages 138 sunny days per year. The US average is 205 sunny days.

Fort Carson, Colorado gets 17.1 inches of rain, on average, per year. Fort Lewis, Washington gets 47.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Fort Carson averages 30.9 inches of snow per year. Fort Lewis averages 6.2 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Fort Carson, Colorado
Summer High: the July high is around 85.7 degrees
Winter Low: the January low is 17.4
Rain: averages 17.1 inches of rain a year
Snow: averages 30.9 inches of snow a year

Fort Lewis, Washington
Summer High: the July high is around 77 degrees
Winter Low: the January low is 35.4
Rain: averages 47.6 inches of rain a year
Snow: averages 6.2 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Fort Carson is 7.4 (10=best), which means it is one of the most pleasant places in Colorado.

The annual BestPlaces Comfort Index for Fort Lewis is 7.2 (10=best), which means it is more comfortable than most places in Washington.

Today's Weather - Fort Lewis, WA

60°F

Today's Weather - Fort Carson, CO

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Fort Lewis / Fort Carson

August is the hottest month for Fort Lewis with an average high temperature of 77.4°, which ranks it as about average compared to other places in Washington. In Fort Lewis, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fort Lewis are August, July and September.

July is the hottest month for Fort Carson with an average high temperature of 85.7°, which ranks it as about average compared to other places in Colorado. In Fort Carson, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fort Carson are June, September and August.

December has the coldest nighttime temperatures for Fort Lewis with an average of 34.2°. This is warmer than most places in Washington.

December has the coldest nighttime temperatures for Fort Carson with an average of 17.3°. This is warmer than most places in Colorado.

In Fort Lewis, there are 3.7 days annually when the high temperature is over 90°, which is about average compared to other places in Washington.

In Fort Carson, there are 18.8 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Fort Lewis, there are 43.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Washington.

In Fort Carson, there are 158.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Fort Lewis, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Washington.

In Fort Carson, there are 5.4 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

November is the wettest month in Fort Lewis with 7.9 inches of rain, and the driest month is July with 0.8 inches. The wettest season is Spring with 40% of yearly precipitation and 8% occurs in Autumn, which is the driest season. The annual rainfall of 47.6 inches in Fort Lewis means that it is wetter than most places in Washington.


August is the wettest month in Fort Carson with 3.4 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Autumn with 53% of yearly precipitation and 6% occurs in Spring, which is the driest season. The annual rainfall of 17.1 inches in Fort Carson means that it is about average compared to other places in Colorado.

November is the rainiest month in Fort Lewis with 19.7 days of rain, and August is the driest month with only 4.6 rainy days. There are 155.7 rainy days annually in Fort Lewis, which is about average compared to other places in Washington. The rainiest season is Spring when it rains 34% of the time and the driest is Autumn with only a 12% chance of a rainy day.

August is the rainiest month in Fort Carson with 12.1 days of rain, and January is the driest month with only 3.0 rainy days. There are 79.0 rainy days annually in Fort Carson, which is about average compared to other places in Colorado. The rainiest season is Autumn when it rains 41% of the time and the driest is Spring with only a 12% chance of a rainy day.

An annual snowfall of 6.2 inches in Fort Lewis means that it is about average compared to other places in Washington.

An annual snowfall of 30.9 inches in Fort Carson means that it is less snowy than most places in Colorado.

February is the snowiest month in Fort Lewis with 2.1 inches of snow, and 5 months of the year have significant snowfall.

March is the snowiest month in Fort Carson with 6.5 inches of snow, and 8 months of the year have significant snowfall.