2025 Compare Climate & Weather:
Wilmington, DE vs Chesterfield, MO

Highlights

On average, there are 202 sunny days per year in Chesterfield. Wilmington averages 199 sunny days per year. The US average is 205 sunny days.

Chesterfield, Missouri gets 42.7 inches of rain, on average, per year. Wilmington, Delaware gets 44.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chesterfield averages 12.8 inches of snow per year. Wilmington averages 13 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Chesterfield, Missouri
Summer High: the July high is around 88.7 degrees
Winter Low: the January low is 21.1
Rain: averages 42.7 inches of rain a year
Snow: averages 12.8 inches of snow a year

Wilmington, Delaware
Summer High: the July high is around 86.1 degrees
Winter Low: the January low is 25.2
Rain: averages 44.7 inches of rain a year
Snow: averages 13 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Chesterfield is 7.2 (10=best), which means it is more comfortable than most places in Missouri.

The annual BestPlaces Comfort Index for Wilmington is 7.3 (10=best), which means it is about average compared to other places in Delaware.

Today's Weather - Wilmington, DE

66°F

Today's Weather - Chesterfield, MO

59°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Wilmington / Chesterfield

July is the hottest month for Wilmington with an average high temperature of 86.1°, which ranks it as cooler than most places in Delaware. In Wilmington, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Wilmington are September, June and May.

July is the hottest month for Chesterfield with an average high temperature of 88.7°, which ranks it as warmer than most places in Missouri. In Chesterfield, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chesterfield are May, September and June.

January has the coldest nighttime temperatures for Wilmington with an average of 25.2°. This is colder than most places in Delaware.

January has the coldest nighttime temperatures for Chesterfield with an average of 21.1°. This is about average compared to other places in Missouri.

In Wilmington, there are 18.1 days annually when the high temperature is over 90°, which is one of the coolest places in Delaware.

In Chesterfield, there are 36.2 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Wilmington, there are 84.0 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Delaware.

In Chesterfield, there are 102.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Wilmington, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Delaware.

In Chesterfield, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Missouri.

July is the wettest month in Wilmington with 4.9 inches of rain, and the driest month is February with 2.7 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 44.7 inches in Wilmington means that it is drier than most places in Delaware.


May is the wettest month in Chesterfield with 5.0 inches of rain, and the driest month is January with 2.3 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 42.7 inches in Chesterfield means that it is drier than most places in Missouri.

April is the rainiest month in Wilmington with 10.5 days of rain, and August is the driest month with only 7.8 rainy days. There are 110.4 rainy days annually in Wilmington, which is less rainy than most places in Delaware. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

May is the rainiest month in Chesterfield with 11.2 days of rain, and January is the driest month with only 6.7 rainy days. There are 102.5 rainy days annually in Chesterfield, which is rainier than most places in Missouri. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 13.0 inches in Wilmington means that it is about average compared to other places in Delaware.

An annual snowfall of 12.8 inches in Chesterfield means that it is about average compared to other places in Missouri.

February is the snowiest month in Wilmington with 4.8 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Chesterfield with 3.9 inches of snow, and 5 months of the year have significant snowfall.