2025 Compare Climate & Weather:
Pekin, IL vs Oskaloosa, IA

Highlights

On average, there are 194 sunny days per year in Oskaloosa. Pekin averages 190 sunny days per year. The US average is 205 sunny days.

Oskaloosa, Iowa gets 37.1 inches of rain, on average, per year. Pekin, Illinois gets 37.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Oskaloosa averages 25.5 inches of snow per year. Pekin averages 24.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Oskaloosa, Iowa
Summer High: the July high is around 85 degrees
Winter Low: the January low is 12.5
Rain: averages 37.1 inches of rain a year
Snow: averages 25.5 inches of snow a year

Pekin, Illinois
Summer High: the July high is around 85.7 degrees
Winter Low: the January low is 16
Rain: averages 37.7 inches of rain a year
Snow: averages 24.4 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Oskaloosa is 7.0 (10=best), which means it is more comfortable than most places in Iowa.

The annual BestPlaces Comfort Index for Pekin is 7.0 (10=best), which means it is about average compared to other places in Illinois.

Today's Weather - Pekin, IL

86°F

Today's Weather - Oskaloosa, IA

86°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Pekin / Oskaloosa

July is the hottest month for Pekin with an average high temperature of 85.7°, which ranks it as about average compared to other places in Illinois. In Pekin, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pekin are September, May and June.

July is the hottest month for Oskaloosa with an average high temperature of 85.0°, which ranks it as warmer than most places in Iowa. In Oskaloosa, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oskaloosa are September, June and August.

January has the coldest nighttime temperatures for Pekin with an average of 16.0°. This is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for Oskaloosa with an average of 12.5°. This is warmer than most places in Iowa.

In Pekin, there are 19.5 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.

In Oskaloosa, there are 14.2 days annually when the high temperature is over 90°, which is about average compared to other places in Iowa.

In Pekin, there are 123.7 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Oskaloosa, there are 137.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Iowa.

In Pekin, there are 8.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Illinois.

In Oskaloosa, there are 14.1 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Iowa.

May is the wettest month in Pekin 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 Pekin means that it is drier than most places in Illinois.


June is the wettest month in Oskaloosa with 4.9 inches of rain, and the driest month is January with 1.0 inches. The wettest season is Autumn with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 37.1 inches in Oskaloosa means that it is wetter than most places in Iowa.

May is the rainiest month in Pekin with 11.5 days of rain, and September is the driest month with only 7.6 rainy days. There are 111.9 rainy days annually in Pekin, which is rainier than most places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 23% chance of a rainy day.

May is the rainiest month in Oskaloosa with 11.5 days of rain, and January is the driest month with only 5.8 rainy days. There are 99.1 rainy days annually in Oskaloosa, which is about average compared to other places in Iowa. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 18% chance of a rainy day.

An annual snowfall of 24.4 inches in Pekin means that it is snowier than most places in Illinois.

An annual snowfall of 25.5 inches in Oskaloosa means that it is less snowy than most places in Iowa.

December is the snowiest month in Pekin with 7.3 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Oskaloosa with 7.4 inches of snow, and 6 months of the year have significant snowfall.