2025 Compare Climate & Weather:
Belvidere, IL vs Troy, IL

Highlights

On average, there are 204 sunny days per year in Troy. Belvidere averages 189 sunny days per year. The US average is 205 sunny days.

Troy, Illinois gets 43.7 inches of rain, on average, per year. Belvidere, Illinois gets 36.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Troy averages 11.6 inches of snow per year. Belvidere averages 34.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Troy, Illinois
Summer High: the July high is around 89.3 degrees
Winter Low: the January low is 22.1
Rain: averages 43.7 inches of rain a year
Snow: averages 11.6 inches of snow a year

Belvidere, Illinois
Summer High: the July high is around 83.7 degrees
Winter Low: the January low is 12.7
Rain: averages 36.8 inches of rain a year
Snow: averages 34.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Troy is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

The annual BestPlaces Comfort Index for Belvidere is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

Today's Weather - Belvidere, IL

53°F

Today's Weather - Troy, IL

57°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Belvidere / Troy

July is the hottest month for Belvidere with an average high temperature of 83.7°, which ranks it as cooler than most places in Illinois. In Belvidere, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Belvidere are June, September and August.

July is the hottest month for Troy with an average high temperature of 89.3°, which ranks it as one of the hottest places in Illinois. In Troy, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Troy are May, September and June.

January has the coldest nighttime temperatures for Belvidere with an average of 12.7°. This is one of the coldest places in Illinois.

January has the coldest nighttime temperatures for Troy with an average of 22.1°. This is warmer than most places in Illinois.

In Belvidere, there are 12.6 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.

In Troy, there are 39.9 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Belvidere, there are 137.9 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Troy, there are 96.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Belvidere, there are 12.8 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.

In Troy, there are 2.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

August is the wettest month in Belvidere with 4.8 inches of rain, and the driest month is January with 1.4 inches. The wettest season is Autumn with 37% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.8 inches in Belvidere means that it is drier than most places in Illinois.


May is the wettest month in Troy with 4.9 inches of rain, and the driest month is January with 2.5 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 43.7 inches in Troy means that it is wetter than most places in Illinois.

May is the rainiest month in Belvidere with 12.1 days of rain, and February is the driest month with only 8.0 rainy days. There are 116.0 rainy days annually in Belvidere, 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 Troy with 10.9 days of rain, and February is the driest month with only 6.6 rainy days. There are 96.6 rainy days annually in Troy, which is less rainy than most places in Illinois. 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 34.7 inches in Belvidere means that it is one of the snowiest places in Illinois.

An annual snowfall of 11.6 inches in Troy means that it is less snowy than most places in Illinois.

December is the snowiest month in Belvidere with 11.0 inches of snow, and 6 months of the year have significant snowfall.

January is the snowiest month in Troy with 3.8 inches of snow, and 4 months of the year have significant snowfall.