2025 Compare Climate & Weather:
Madison, WI vs Custer, SD

Highlights

On average, there are 226 sunny days per year in Custer. Madison averages 187 sunny days per year. The US average is 205 sunny days.

Custer, South Dakota gets 19.9 inches of rain, on average, per year. Madison, Wisconsin gets 36.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Custer averages 55.3 inches of snow per year. Madison averages 42.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Custer, South Dakota
Summer High: the July high is around 79.5 degrees
Winter Low: the January low is 15.5
Rain: averages 19.9 inches of rain a year
Snow: averages 55.3 inches of snow a year

Madison, Wisconsin
Summer High: the July high is around 81.9 degrees
Winter Low: the January low is 10.2
Rain: averages 36.1 inches of rain a year
Snow: averages 42.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Custer is 6.7 (10=best), which means it is less comfortable than most places in South Dakota.

The annual BestPlaces Comfort Index for Madison is 6.7 (10=best), which means it is one of the most pleasant places in Wisconsin.

Today's Weather - Madison, WI

48°F

Today's Weather - Custer, SD

40°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Madison / Custer

July is the hottest month for Madison with an average high temperature of 81.9°, which ranks it as warmer than most places in Wisconsin. In Madison, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Madison are June, August and July.

July is the hottest month for Custer with an average high temperature of 79.5°, which ranks it as one of the coolest places in South Dakota. In Custer, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Custer are August, July and June.

January has the coldest nighttime temperatures for Madison with an average of 10.2°. This is warmer than most places in Wisconsin.

December has the coldest nighttime temperatures for Custer with an average of 15.2°. This is one of the warmest places in South Dakota.

In Madison, there are 6.6 days annually when the high temperature is over 90°, which is hotter than most places in Wisconsin.

In Custer, there are 4.7 days annually when the high temperature is over 90°, which is one of the coolest places in South Dakota.

In Madison, there are 149.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Wisconsin.

In Custer, there are 177.0 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in South Dakota.

In Madison, there are 17.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wisconsin.

In Custer, there are 12.6 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in South Dakota.

June is the wettest month in Madison with 4.7 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.1 inches in Madison means that it is one of the wettest places in Wisconsin.


May is the wettest month in Custer with 3.6 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Autumn with 40% of yearly precipitation and 7% occurs in Spring, which is the driest season. The annual rainfall of 19.9 inches in Custer means that it is drier than most places in South Dakota.

May is the rainiest month in Madison with 11.8 days of rain, and February is the driest month with only 7.5 rainy days. There are 114.9 rainy days annually in Madison, which is rainier than most places in Wisconsin. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 21% chance of a rainy day.

May is the rainiest month in Custer with 12.8 days of rain, and January is the driest month with only 3.9 rainy days. There are 93.0 rainy days annually in Custer, which is one of the rainiest places in South Dakota. The rainiest season is Autumn when it rains 36% of the time and the driest is Spring with only a 14% chance of a rainy day.

An annual snowfall of 42.4 inches in Madison means that it is about average compared to other places in Wisconsin.

An annual snowfall of 55.3 inches in Custer means that it is one of the snowiest places in South Dakota.

December is the snowiest month in Madison with 11.3 inches of snow, and 6 months of the year have significant snowfall.

April is the snowiest month in Custer with 11.5 inches of snow, and 9 months of the year have significant snowfall.