2025 Compare Climate & Weather:
Nashua, NH vs Boulder, CO

Highlights

On average, there are 245 sunny days per year in Boulder. Nashua averages 201 sunny days per year. The US average is 205 sunny days.

Boulder, Colorado gets 18.1 inches of rain, on average, per year. Nashua, New Hampshire gets 46.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boulder averages 71.1 inches of snow per year. Nashua averages 56.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Nashua, New Hampshire
Summer High: the July high is around 82.1 degrees
Winter Low: the January low is 12.4
Rain: averages 46.5 inches of rain a year
Snow: averages 56.5 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Nashua is 6.7 (10=best), which means it is more comfortable than most places in New Hampshire.

Today's Weather - Nashua, NH

79°F

Today's Weather - Boulder, CO

74°F

Average Monthly High / Low (°F)

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

July is the hottest month for Nashua with an average high temperature of 82.1°, which ranks it as warmer than most places in New Hampshire. In Nashua, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Nashua are June, August and July.

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.

January has the coldest nighttime temperatures for Nashua with an average of 12.4°. This is warmer than most places in New Hampshire.

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

In Nashua, there are 8.9 days annually when the high temperature is over 90°, which is one of the hottest places in New Hampshire.

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 Nashua, there are 154.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in New Hampshire.

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 Nashua, there are 9.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in New Hampshire.

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

October is the wettest month in Nashua with 4.4 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Winter with 26% of yearly precipitation and 23% occurs in Spring, which is the driest season. The annual rainfall of 46.5 inches in Nashua means that it is wetter than most places in New Hampshire.


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.

May is the rainiest month in Nashua with 12.2 days of rain, and September is the driest month with only 9.1 rainy days. There are 125.3 rainy days annually in Nashua, which is less rainy than most places in New Hampshire. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 23% chance of a rainy day.

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.

An annual snowfall of 56.5 inches in Nashua means that it is less snowy than most places in New Hampshire.

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

January is the snowiest month in Nashua with 17.1 inches of snow, and 6 months of the year have significant snowfall.

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