2025 Compare Climate & Weather:
Maryville, TN vs Custer, SD

Highlights

On average, there are 226 sunny days per year in Custer. Maryville averages 200 sunny days per year. The US average is 205 sunny days.

Custer, South Dakota gets 19.9 inches of rain, on average, per year. Maryville, Tennessee gets 50 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. Maryville averages 6 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

Maryville, Tennessee
Summer High: the July high is around 88 degrees
Winter Low: the January low is 28
Rain: averages 50 inches of rain a year
Snow: averages 6 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 Maryville is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

Today's Weather - Maryville, TN

57°F

Today's Weather - Custer, SD

51°F

Average Monthly High / Low (°F)

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

July is the hottest month for Maryville with an average high temperature of 88.0°, which ranks it as cooler than most places in Tennessee. In Maryville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Maryville are May, September and October.

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 Maryville with an average of 28.0°. This is warmer than most places in Tennessee.

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 Maryville, there are 29.7 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

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 Maryville, there are 77.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

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 Maryville, there are 0.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Tennessee.

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.

July is the wettest month in Maryville with 5.2 inches of rain, and the driest month is October with 2.7 inches. The wettest season is Spring with 28% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 50.0 inches in Maryville means that it is drier than most places in Tennessee.


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.

March is the rainiest month in Maryville with 12.1 days of rain, and September is the driest month with only 8.0 rainy days. There are 128.0 rainy days annually in Maryville, which is rainier than most places in Tennessee. The rainiest season is Summer when it rains 27% of the time and the driest is Winter 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 6.0 inches in Maryville means that it is snowier than most places in Tennessee.

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

January is the snowiest month in Maryville with 2.6 inches of snow, and 4 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.