2025 Compare Climate & Weather:
Rapid City, SD vs Lexington, KY

Highlights

On average, there are 188 sunny days per year in Lexington. Rapid City averages 226 sunny days per year. The US average is 205 sunny days.

Lexington, Kentucky gets 46.2 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.

Lexington averages 10 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

Lexington, Kentucky
Summer High: the July high is around 85.8 degrees
Winter Low: the January low is 23.9
Rain: averages 46.2 inches of rain a year
Snow: averages 10 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 Lexington-Fayette is 7.3 (10=best), which means it is one of the most pleasant places in Kentucky.

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

76°F

Today's Weather - Lexington, KY

55°F

Average Monthly High / Low (°F)

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

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.

July is the hottest month for Lexington-Fayette with an average high temperature of 85.8°, which ranks it as cooler than most places in Kentucky. In Lexington-Fayette, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lexington-Fayette are September, May 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.

January has the coldest nighttime temperatures for Lexington-Fayette with an average of 23.9°. This is about average compared to other places in Kentucky.

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 Lexington-Fayette, there are 17.4 days annually when the high temperature is over 90°, which is cooler than most places in Kentucky.

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 Lexington-Fayette, there are 94.3 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Kentucky.

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 Lexington-Fayette, there are 1.3 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Kentucky.

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.


May is the wettest month in Lexington-Fayette with 5.4 inches of rain, and the driest month is August with 3.2 inches. The wettest season is Summer with 29% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 46.2 inches in Lexington-Fayette means that it is drier than most places in Kentucky.

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.

May is the rainiest month in Lexington-Fayette with 12.1 days of rain, and September is the driest month with only 7.4 rainy days. There are 120.9 rainy days annually in Lexington-Fayette, which is rainier than most places in Kentucky. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 21% 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 10.0 inches in Lexington-Fayette means that it is about average compared to other places in Kentucky.

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

February is the snowiest month in Lexington-Fayette with 3.6 inches of snow, and 4 months of the year have significant snowfall.