2025 Compare Climate & Weather:
Rapid City, SD vs Coeur d'Alene, ID

Highlights

On average, there are 174 sunny days per year in Coeur d'Alene. Rapid City averages 226 sunny days per year. The US average is 205 sunny days.

Coeur d'Alene, Idaho gets 26.6 inches of rain, on average, per year. Rapid City, South Dakota gets 18.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Coeur d'Alene averages 42.4 inches of snow per year. Rapid City averages 38 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Coeur d'Alene, Idaho
Summer High: the July high is around 81.7 degrees
Winter Low: the January low is 24.5
Rain: averages 26.6 inches of rain a year
Snow: averages 42.4 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Coeur d'Alene is 6.7 (10=best), which means it is more comfortable than most places in Idaho.

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.

Today's Weather - Rapid City, SD

67°F

Today's Weather - Coeur d'Alene, ID

73°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rapid City / Coeur d'Alene

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.

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

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.

December has the coldest nighttime temperatures for Coeur d'Alene with an average of 23.8°. This is one of the warmest places in Idaho.

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 Coeur d'Alene, there are 13.8 days annually when the high temperature is over 90°, which is cooler than most places in Idaho.

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 Coeur d'Alene, there are 129.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Idaho.

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.

In Coeur d'Alene, there are 1.9 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Idaho.

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.


November is the wettest month in Coeur d'Alene with 3.8 inches of rain, and the driest month is August with 0.9 inches. The wettest season is Spring with 34% of yearly precipitation and 15% occurs in Autumn, which is the driest season. The annual rainfall of 26.6 inches in Coeur d'Alene means that it is wetter than most places in Idaho.

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.

November is the rainiest month in Coeur d'Alene with 15.0 days of rain, and August is the driest month with only 4.4 rainy days. There are 122.1 rainy days annually in Coeur d'Alene, which is rainier than most places in Idaho. The rainiest season is Spring when it rains 31% of the time and the driest is Autumn with only a 15% chance of a rainy day.

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

An annual snowfall of 42.4 inches in Coeur d'Alene means that it is about average compared to other places in Idaho.

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

December is the snowiest month in Coeur d'Alene with 15.8 inches of snow, and 5 months of the year have significant snowfall.