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

Highlights

On average, there are 211 sunny days per year in Sioux Falls. Oklahoma City averages 231 sunny days per year. The US average is 205 sunny days.

Sioux Falls, South Dakota gets 26.7 inches of rain, on average, per year. Oklahoma City, Oklahoma gets 35.6 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Sioux Falls averages 37.6 inches of snow per year. Oklahoma City averages 5.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Sioux Falls, South Dakota
Summer High: the July high is around 83.5 degrees
Winter Low: the January low is 6.3
Rain: averages 26.7 inches of rain a year
Snow: averages 37.6 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Sioux Falls is 6.8 (10=best), which means it is about average compared to other places in South Dakota.

The annual BestPlaces Comfort Index for Oklahoma City is 7.3 (10=best), which means it is more comfortable than most places in Oklahoma.

Today's Weather - Oklahoma City, OK

58°F

Today's Weather - Sioux Falls, SD

72°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Oklahoma City / Sioux Falls

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.

July is the hottest month for Sioux Falls with an average high temperature of 83.5°, which ranks it as cooler than most places in South Dakota. In Sioux Falls, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Sioux Falls are June, August and September.

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

January has the coldest nighttime temperatures for Sioux Falls with an average of 6.3°. This 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 Sioux Falls, there are 11.2 days annually when the high temperature is over 90°, which is cooler 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 Sioux Falls, there are 161.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in South Dakota.

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

In Sioux Falls, there are 26.3 days annually when the nighttime low temperature falls below zero°, which is about average compared to other 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 wettest month in Sioux Falls with 4.0 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Autumn with 38% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 26.7 inches in Sioux Falls means that it is wetter than most places in South Dakota.

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.

May is the rainiest month in Sioux Falls with 10.8 days of rain, and February is the driest month with only 5.1 rainy days. There are 90.1 rainy days annually in Sioux Falls, which is one of the rainiest places in South Dakota. The rainiest season is Autumn when it rains 30% of the time and the driest is Spring with only a 17% chance of a rainy day.

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

An annual snowfall of 37.6 inches in Sioux Falls means that it is about average compared to other places in South Dakota.

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

December is the snowiest month in Sioux Falls with 7.0 inches of snow, and 7 months of the year have significant snowfall.