2025 Compare Climate & Weather:
Sioux Falls, SD vs Duluth, MN

Highlights

On average, there are 178 sunny days per year in Duluth. Sioux Falls averages 211 sunny days per year. The US average is 205 sunny days.

Duluth, Minnesota gets 31.2 inches of rain, on average, per year. Sioux Falls, South Dakota gets 26.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Duluth averages 69.5 inches of snow per year. Sioux Falls averages 37.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Duluth, Minnesota
Summer High: the July high is around 76.5 degrees
Winter Low: the January low is 2.3
Rain: averages 31.2 inches of rain a year
Snow: averages 69.5 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Duluth is 6.0 (10=best), which means it is one of the least comfortable places in Minnesota.

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.

Today's Weather - Sioux Falls, SD

68°F

Today's Weather - Duluth, MN

39°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Sioux Falls / Duluth

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.

July is the hottest month for Duluth with an average high temperature of 76.5°, which ranks it as one of the coolest places in Minnesota. In Duluth, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Duluth are July, August and June.

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.

January has the coldest nighttime temperatures for Duluth with an average of 2.3°. This is about average compared to other places in Minnesota.

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 Duluth, there are 2.4 days annually when the high temperature is over 90°, which is one of the coolest places in Minnesota.

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 Duluth, there are 174.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Minnesota.

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.

In Duluth, there are 36.1 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Minnesota.

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.


September is the wettest month in Duluth with 4.1 inches of rain, and the driest month is February with 0.8 inches. The wettest season is Autumn with 38% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 31.2 inches in Duluth means that it is wetter than most places in Minnesota.

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.

June is the rainiest month in Duluth with 12.1 days of rain, and February is the driest month with only 6.8 rainy days. There are 117.3 rainy days annually in Duluth, which is one of the rainiest places in Minnesota. The rainiest season is Autumn when it rains 28% of the time and the driest is Spring with only a 21% chance of a rainy day.

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

An annual snowfall of 69.5 inches in Duluth means that it is one of the snowiest places in Minnesota.

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

January is the snowiest month in Duluth with 16.0 inches of snow, and 7 months of the year have significant snowfall.