2025 Compare Climate & Weather:
Greencastle, IN vs Sioux Falls, SD

Highlights

On average, there are 211 sunny days per year in Sioux Falls. Greencastle averages 189 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. Greencastle, Indiana gets 44.7 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. Greencastle averages 19.7 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

Greencastle, Indiana
Summer High: the July high is around 84.5 degrees
Winter Low: the January low is 17.5
Rain: averages 44.7 inches of rain a year
Snow: averages 19.7 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 Greencastle is 7.1 (10=best), which means it is more comfortable than most places in Indiana.

Today's Weather - Greencastle, IN

53°F

Today's Weather - Sioux Falls, SD

51°F

Average Monthly High / Low (°F)

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

July is the hottest month for Greencastle with an average high temperature of 84.5°, which ranks it as about average compared to other places in Indiana. In Greencastle, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Greencastle are September, June and May.

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 Greencastle with an average of 17.5°. This is colder than most places in Indiana.

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 Greencastle, there are 14.0 days annually when the high temperature is over 90°, which is about average compared to other places in Indiana.

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 Greencastle, there are 124.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Indiana.

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 Greencastle, there are 7.2 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Indiana.

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.

May is the wettest month in Greencastle with 5.2 inches of rain, and the driest month is February with 2.5 inches. The wettest season is Summer with 28% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 44.7 inches in Greencastle means that it is wetter than most places in Indiana.


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 Greencastle with 11.8 days of rain, and September is the driest month with only 6.8 rainy days. There are 111.3 rainy days annually in Greencastle, which is less rainy than most places in Indiana. 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.

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 19.7 inches in Greencastle means that it is about average compared to other places in Indiana.

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 Greencastle with 7.5 inches of snow, and 5 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.