2025 Compare Climate & Weather:
Boulder, CO vs Madison, WI

Highlights

On average, there are 187 sunny days per year in Madison. Boulder averages 245 sunny days per year. The US average is 205 sunny days.

Madison, Wisconsin gets 36.1 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.

Madison averages 42.4 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

Madison, Wisconsin
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 10.2
Rain: averages 36.1 inches of rain a year
Snow: averages 42.4 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 Madison is 6.7 (10=best), which means it is one of the most pleasant places in Wisconsin.

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

88°F

Today's Weather - Madison, WI

82°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Madison with an average high temperature of 81.9°, which ranks it as warmer than most places in Wisconsin. In Madison, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Madison are June, August and July.

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

January has the coldest nighttime temperatures for Madison with an average of 10.2°. This is warmer than most places in Wisconsin.

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 Madison, there are 6.6 days annually when the high temperature is over 90°, which is hotter than most places in Wisconsin.

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 Madison, there are 149.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wisconsin.

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 Madison, there are 17.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wisconsin.

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.


June is the wettest month in Madison with 4.7 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.1 inches in Madison means that it is one of the wettest places in Wisconsin.

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.

May is the rainiest month in Madison with 11.8 days of rain, and February is the driest month with only 7.5 rainy days. There are 114.9 rainy days annually in Madison, which is rainier than most places in Wisconsin. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 21% 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 42.4 inches in Madison means that it is about average compared to other places in Wisconsin.

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 Madison with 11.3 inches of snow, and 6 months of the year have significant snowfall.