2025 Compare Climate & Weather:
Rapid City, SD vs Oklahoma City, OK

Highlights

On average, there are 231 sunny days per year in Oklahoma City. Rapid City averages 226 sunny days per year. The US average is 205 sunny days.

Oklahoma City, Oklahoma gets 35.6 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.

Oklahoma City averages 5.8 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

Oklahoma City, Oklahoma
Summer High: the July high is around 92.9 degrees
Winter Low: the January low is 27.1
Rain: averages 35.6 inches of rain a year
Snow: averages 5.8 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 Oklahoma City is 7.3 (10=best), which means it is more comfortable than most places in Oklahoma.

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

69°F

Today's Weather - Oklahoma City, OK

66°F

Average Monthly High / Low (°F)

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

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 Oklahoma City with an average high temperature of 92.9°, which ranks it as cooler than most places in Oklahoma. In Oklahoma City, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oklahoma City are May, October and September.

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 Oklahoma City with an average of 27.1°. This is warmer than most places in Oklahoma.

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 Oklahoma City, there are 65.1 days annually when the high temperature is over 90°, which is about average compared to other places in Oklahoma.

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 Oklahoma City, there are 72.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Oklahoma.

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 Oklahoma City, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Oklahoma.

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.


June is the wettest month in Oklahoma City with 4.9 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 31% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 35.6 inches in Oklahoma City means that it is drier than most places in Oklahoma.

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 Oklahoma City with 9.5 days of rain, and January is the driest month with only 4.9 rainy days. There are 79.1 rainy days annually in Oklahoma City, which is about average compared to other places in Oklahoma. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 20% 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 5.8 inches in Oklahoma City means that it is about average compared to other places in Oklahoma.

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

January is the snowiest month in Oklahoma City with 2.3 inches of snow, and 4 months of the year have significant snowfall.