2025 Compare Climate & Weather:
Charleston, SC vs Oklahoma City, OK

Highlights

On average, there are 231 sunny days per year in Oklahoma City. Charleston averages 209 sunny days per year. The US average is 205 sunny days.

Oklahoma City, Oklahoma gets 35.6 inches of rain, on average, per year. Charleston, South Carolina gets 48.3 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. Charleston averages 0.4 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

Charleston, South Carolina
Summer High: the July high is around 89.9 degrees
Winter Low: the January low is 39.3
Rain: averages 48.3 inches of rain a year
Snow: averages 0.4 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 Charleston is 7.2 (10=best), which means it is less comfortable than most places in South Carolina.

Today's Weather - Charleston, SC

68°F

Today's Weather - Oklahoma City, OK

59°F

Average Monthly High / Low (°F)

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

July is the hottest month for Charleston with an average high temperature of 89.9°, which ranks it as cooler than most places in South Carolina. In Charleston, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Charleston are October, May and April.

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 Charleston with an average of 39.3°. This is one of the warmest places in South Carolina.

January has the coldest nighttime temperatures for Oklahoma City with an average of 27.1°. This is warmer than most places in Oklahoma.

In Charleston, there are 41.1 days annually when the high temperature is over 90°, which is cooler than most places in South Carolina.

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 Charleston, there are 17.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in South Carolina.

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 Charleston, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in South Carolina.

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.

August is the wettest month in Charleston with 6.7 inches of rain, and the driest month is May with 2.5 inches. The wettest season is Autumn with 36% of yearly precipitation and 19% occurs in Summer, which is the driest season. The annual rainfall of 48.3 inches in Charleston means that it is wetter than most places in South Carolina.


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.

August is the rainiest month in Charleston with 11.7 days of rain, and May is the driest month with only 6.8 rainy days. There are 105.9 rainy days annually in Charleston, which is rainier than most places in South Carolina. The rainiest season is Autumn when it rains 32% of the time and the driest is Summer with only a 21% 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 0.4 inches in Charleston means that it is less snowy than most places in South Carolina.

An annual snowfall of 5.8 inches in Oklahoma City means that it is about average compared to other places in Oklahoma.

December is the snowiest month in Charleston with 0.2 inches of snow, and no 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.