2025 Compare Climate & Weather:
Gunnison, CO vs Rapid City, SD

Highlights

On average, there are 226 sunny days per year in Rapid City. Gunnison averages 266 sunny days per year. The US average is 205 sunny days.

Rapid City, South Dakota gets 18.2 inches of rain, on average, per year. Gunnison, Colorado gets 10.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rapid City averages 38 inches of snow per year. Gunnison averages 48.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rapid City, South Dakota
Summer High: the July high is around 85.3 degrees
Winter Low: the January low is 14.2
Rain: averages 18.2 inches of rain a year
Snow: averages 38 inches of snow a year

Gunnison, Colorado
Summer High: the July high is around 80.6 degrees
Winter Low: the January low is -3.9
Rain: averages 10.5 inches of rain a year
Snow: averages 48.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Rapid City is 7.0 (10=best), which means it is one of the most pleasant places in South Dakota.

The annual BestPlaces Comfort Index for Gunnison is 6.4 (10=best), which means it is less comfortable than most places in Colorado.

Today's Weather - Gunnison, CO

37°F

Today's Weather - Rapid City, SD

62°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Gunnison / Rapid City

July is the hottest month for Gunnison with an average high temperature of 80.6°, which ranks it as cooler than most places in Colorado. In Gunnison, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Gunnison are August, July and June.

July is the hottest month for Rapid City with an average high temperature of 85.3°, which ranks it as about average compared to other places in South Dakota. In Rapid City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rapid City are June, September and August.

January has the coldest nighttime temperatures for Gunnison with an average of -3.9°. This is one of the coldest places in Colorado.

January has the coldest nighttime temperatures for Rapid City with an average of 14.2°. This is one of the warmest places in South Dakota.

In Gunnison, there are 1.3 days annually when the high temperature is over 90°, which is cooler than most places in Colorado.

In Rapid City, there are 22.5 days annually when the high temperature is over 90°, which is about average compared to other places in South Dakota.

In Gunnison, there are 235.6 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Colorado.

In Rapid City, there are 159.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.

In Gunnison, there are 51.2 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Colorado.

In Rapid City, there are 14.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.

August is the wettest month in Gunnison with 1.6 inches of rain, and the driest month is March with 0.6 inches. The wettest season is Autumn with 35% of yearly precipitation and 20% occurs in Summer, which is the driest season. The annual rainfall of 10.5 inches in Gunnison means that it is one of the driest places in Colorado.


May is the wettest month in Rapid City with 3.8 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Autumn with 38% of yearly precipitation and 6% occurs in Spring, which is the driest season. The annual rainfall of 18.2 inches in Rapid City means that it is drier than most places in South Dakota.

August is the rainiest month in Gunnison with 10.8 days of rain, and June is the driest month with only 5.6 rainy days. There are 84.2 rainy days annually in Gunnison, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 31% of the time and the driest is Summer with only a 21% chance of a rainy day.

June is the rainiest month in Rapid City with 11.8 days of rain, and November is the driest month with only 4.0 rainy days. There are 85.4 rainy days annually in Rapid City, which is rainier than most places in South Dakota. The rainiest season is Autumn when it rains 34% of the time and the driest is Spring with only a 15% chance of a rainy day.

An annual snowfall of 48.4 inches in Gunnison means that it is about average compared to other places in Colorado.

An annual snowfall of 38.0 inches in Rapid City means that it is about average compared to other places in South Dakota.

December is the snowiest month in Gunnison with 10.9 inches of snow, and 8 months of the year have significant snowfall.

March is the snowiest month in Rapid City with 8.6 inches of snow, and 8 months of the year have significant snowfall.