2025 Compare Climate & Weather:
Delavan, WI vs St. Louis, MO

Highlights

On average, there are 202 sunny days per year in St. Louis. Delavan averages 191 sunny days per year. The US average is 205 sunny days.

St. Louis, Missouri gets 42.2 inches of rain, on average, per year. Delavan, Wisconsin gets 36 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

St. Louis averages 15.5 inches of snow per year. Delavan averages 35.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

St. Louis, Missouri
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 22.8
Rain: averages 42.2 inches of rain a year
Snow: averages 15.5 inches of snow a year

Delavan, Wisconsin
Summer High: the July high is around 83.2 degrees
Winter Low: the January low is 11.5
Rain: averages 36 inches of rain a year
Snow: averages 35.9 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Delavan, WI

50°F

Today's Weather - St. Louis, MO

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Delavan / St. Louis

July is the hottest month for Delavan with an average high temperature of 83.2°, which ranks it as one of the hottest places in Wisconsin. In Delavan, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Delavan are June, August and September.

July is the hottest month for St. Louis with an average high temperature of 88.5°, which ranks it as about average compared to other places in Missouri. In St. Louis, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Louis are May, September and June.

January has the coldest nighttime temperatures for Delavan with an average of 11.5°. This is warmer than most places in Wisconsin.

January has the coldest nighttime temperatures for St. Louis with an average of 22.8°. This is warmer than most places in Missouri.

In Delavan, there are 10.8 days annually when the high temperature is over 90°, which is one of the hottest places in Wisconsin.

In St. Louis, there are 36.0 days annually when the high temperature is over 90°, which is hotter than most places in Missouri.

In Delavan, there are 143.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Wisconsin.

In St. Louis, there are 91.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Delavan, there are 14.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wisconsin.

In St. Louis, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Missouri.

June is the wettest month in Delavan with 4.3 inches of rain, and the driest month is January with 1.6 inches. The wettest season is Autumn with 33% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 36.0 inches in Delavan means that it is wetter than most places in Wisconsin.


May is the wettest month in St. Louis with 4.8 inches of rain, and the driest month is February 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 42.2 inches in St. Louis means that it is drier than most places in Missouri.

May is the rainiest month in Delavan with 12.2 days of rain, and February is the driest month with only 8.0 rainy days. There are 121.8 rainy days annually in Delavan, which is rainier than most places in Wisconsin. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 24% chance of a rainy day.

May is the rainiest month in St. Louis with 11.3 days of rain, and September is the driest month with only 7.0 rainy days. There are 105.3 rainy days annually in St. Louis, 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 23% chance of a rainy day.

An annual snowfall of 35.9 inches in Delavan means that it is one of the least snowy places in Wisconsin.

An annual snowfall of 15.5 inches in St. Louis means that it is snowier than most places in Missouri.

January is the snowiest month in Delavan with 10.8 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in St. Louis with 4.9 inches of snow, and 5 months of the year have significant snowfall.