2025 Compare Climate & Weather:
Chino Hills, CA vs Oak Park, IL

Highlights

On average, there are 186 sunny days per year in Oak Park. Chino Hills averages 288 sunny days per year. The US average is 205 sunny days.

Oak Park, Illinois gets 38.4 inches of rain, on average, per year. Chino Hills, California gets 15.4 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Oak Park averages 36.3 inches of snow per year. Chino Hills averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Oak Park, Illinois
Summer High: the July high is around 84 degrees
Winter Low: the January low is 18.7
Rain: averages 38.4 inches of rain a year
Snow: averages 36.3 inches of snow a year

Chino Hills, California
Summer High: the July high is around 91.5 degrees
Winter Low: the January low is 42
Rain: averages 15.4 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Chino Hills is 8.8 (10=best), which means it is more comfortable than most places in California.

Today's Weather - Chino Hills, CA

53°F

Today's Weather - Oak Park, IL

44°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Chino Hills / Oak Park

August is the hottest month for Chino Hills with an average high temperature of 93.1°, which ranks it as warmer than most places in California. In Chino Hills, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chino Hills are May, October and April.

July is the hottest month for Oak Park with an average high temperature of 84.0°, which ranks it as cooler than most places in Illinois. In Oak Park, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Oak Park are June, September and August.

December has the coldest nighttime temperatures for Chino Hills with an average of 40.8°. This is warmer than most places in California.

January has the coldest nighttime temperatures for Oak Park with an average of 18.7°. This is warmer than most places in Illinois.

In Chino Hills, there are 76.6 days annually when the high temperature is over 90°, which is hotter than most places in California.

In Oak Park, there are 12.8 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Chino Hills, there are 4.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Oak Park, there are 107.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Chino Hills, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Oak Park, there are 4.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

February is the wettest month in Chino Hills with 3.6 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 59% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 15.4 inches in Chino Hills means that it is drier than most places in California.


August is the wettest month in Oak Park with 4.4 inches of rain, and the driest month is February with 1.9 inches. The wettest season is Autumn with 31% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 38.4 inches in Oak Park means that it is about average compared to other places in Illinois.

February is the rainiest month in Chino Hills with 6.1 days of rain, and July is the driest month with only 0.2 rainy days. There are 32.7 rainy days annually in Chino Hills, which is less rainy than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 4% chance of a rainy day.

November is the rainiest month in Oak Park with 11.4 days of rain, and February is the driest month with only 8.7 rainy days. There are 124.3 rainy days annually in Oak Park, which is one of the rainiest places in Illinois. The rainiest season is Summer when it rains 27% of the time and the driest is Autumn with only a 24% chance of a rainy day.

There is rarely any recorded snowfall in Chino Hills, ranking it as one of the least snowy places in California.

An annual snowfall of 36.3 inches in Oak Park means that it is one of the snowiest places in Illinois.

Any measurable snowfall is a rare occurance in Chino Hills.

January is the snowiest month in Oak Park with 11.2 inches of snow, and 6 months of the year have significant snowfall.