2025 Compare Climate & Weather:
Boulder, CO vs Leavenworth, WA

Highlights

On average, there are 202 sunny days per year in Leavenworth. Boulder averages 245 sunny days per year. The US average is 205 sunny days.

Leavenworth, Washington gets 29.3 inches of rain, on average, per year. Boulder, Colorado gets 18.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Leavenworth averages 95.6 inches of snow per year. Boulder averages 71.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Leavenworth, Washington
Summer High: the July high is around 81.3 degrees
Winter Low: the January low is 21.8
Rain: averages 29.3 inches of rain a year
Snow: averages 95.6 inches of snow a year

Boulder, Colorado
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 18.9
Rain: averages 18.1 inches of rain a year
Snow: averages 71.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Leavenworth is 6.5 (10=best), which means it is one of the least comfortable places in Washington.

The annual BestPlaces Comfort Index for Boulder is 7.1 (10=best), which means it is about average compared to other places in Colorado.

Today's Weather - Boulder, CO

46°F

Today's Weather - Leavenworth, WA

61°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Boulder / Leavenworth

July is the hottest month for Boulder with an average high temperature of 88.1°, which ranks it as about average compared to other places in Colorado. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder are September, June and May.

August is the hottest month for Leavenworth with an average high temperature of 81.7°, which ranks it as warmer than most places in Washington. In Leavenworth, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Leavenworth are July, August and September.

December has the coldest nighttime temperatures for Boulder with an average of 18.3°. This is one of the warmest places in Colorado.

December has the coldest nighttime temperatures for Leavenworth with an average of 21.1°. This is one of the coldest places in Washington.

In Boulder, there are 32.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Leavenworth, there are 16.3 days annually when the high temperature is over 90°, which is hotter than most places in Washington.

In Boulder, there are 151.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Leavenworth, there are 166.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Washington.

In Boulder, there are 5.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

In Leavenworth, there are 2.7 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 Boulder with 2.5 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 37% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 18.1 inches in Boulder means that it is wetter than most places in Colorado.


January is the wettest month in Leavenworth with 5.6 inches of rain, and the driest month is July with 0.5 inches. The wettest season is Spring with 47% of yearly precipitation and 7% occurs in Autumn, which is the driest season. The annual rainfall of 29.3 inches in Leavenworth means that it is drier than most places in Washington.

May is the rainiest month in Boulder with 10.5 days of rain, and January is the driest month with only 4.7 rainy days. There are 88.0 rainy days annually in Boulder, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

November is the rainiest month in Leavenworth with 14.1 days of rain, and August is the driest month with only 2.9 rainy days. There are 100.1 rainy days annually in Leavenworth, which is less rainy than most places in Washington. The rainiest season is Spring when it rains 38% of the time and the driest is Autumn with only a 12% chance of a rainy day.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.

An annual snowfall of 95.6 inches in Leavenworth means that it is one of the snowiest places in Washington.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.

December is the snowiest month in Leavenworth with 33.8 inches of snow, and 7 months of the year have significant snowfall.