2025 Compare Climate & Weather:
Rolla, MO vs Peoria, IL

Highlights

On average, there are 194 sunny days per year in Peoria. Rolla averages 193 sunny days per year. The US average is 205 sunny days.

Peoria, Illinois gets 37.7 inches of rain, on average, per year. Rolla, Missouri gets 46.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Peoria averages 23 inches of snow per year. Rolla averages 12.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Peoria, Illinois
Summer High: the July high is around 85.6 degrees
Winter Low: the January low is 15.5
Rain: averages 37.7 inches of rain a year
Snow: averages 23 inches of snow a year

Rolla, Missouri
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 20.8
Rain: averages 46.4 inches of rain a year
Snow: averages 12.8 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Peoria is 7.1 (10=best), which means it is more comfortable than most places in Illinois.

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

Today's Weather - Rolla, MO

53°F

Today's Weather - Peoria, IL

51°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Rolla / Peoria

July is the hottest month for Rolla with an average high temperature of 88.1°, which ranks it as about average compared to other places in Missouri. In Rolla, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rolla are September, May and June.

July is the hottest month for Peoria with an average high temperature of 85.6°, which ranks it as about average compared to other places in Illinois. In Peoria, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Peoria are September, June and May.

January has the coldest nighttime temperatures for Rolla with an average of 20.8°. This is about average compared to other places in Missouri.

January has the coldest nighttime temperatures for Peoria with an average of 15.5°. This is colder than most places in Illinois.

In Rolla, there are 29.9 days annually when the high temperature is over 90°, which is cooler than most places in Missouri.

In Peoria, there are 19.9 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.

In Rolla, there are 102.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Missouri.

In Peoria, there are 125.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Rolla, there are 2.6 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Missouri.

In Peoria, there are 8.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

May is the wettest month in Rolla with 5.2 inches of rain, and the driest month is January with 2.4 inches. The wettest season is Summer with 29% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 46.4 inches in Rolla means that it is wetter than most places in Missouri.


May is the wettest month in Peoria with 4.5 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 30% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 37.7 inches in Peoria means that it is drier than most places in Illinois.

May is the rainiest month in Rolla with 12.6 days of rain, and September is the driest month with only 7.9 rainy days. There are 115.1 rainy days annually in Rolla, which is one of the rainiest 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.

May is the rainiest month in Peoria with 11.5 days of rain, and February is the driest month with only 7.5 rainy days. There are 110.1 rainy days annually in Peoria, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 23% chance of a rainy day.

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

An annual snowfall of 23.0 inches in Peoria means that it is snowier than most places in Illinois.

January is the snowiest month in Rolla with 4.0 inches of snow, and 5 months of the year have significant snowfall.

December is the snowiest month in Peoria with 7.0 inches of snow, and 6 months of the year have significant snowfall.