2025 Compare Climate & Weather:
Cairo, IL vs Fairmont City, IL

Highlights

On average, there are 199 sunny days per year in Fairmont City. Cairo averages 218 sunny days per year. The US average is 205 sunny days.

Fairmont City, Illinois gets 42.2 inches of rain, on average, per year. Cairo, Illinois gets 47.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Fairmont City averages 13.2 inches of snow per year. Cairo averages 6.9 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Fairmont City, Illinois
Summer High: the July high is around 88.5 degrees
Winter Low: the January low is 22.6
Rain: averages 42.2 inches of rain a year
Snow: averages 13.2 inches of snow a year

Cairo, Illinois
Summer High: the July high is around 89.2 degrees
Winter Low: the January low is 25.5
Rain: averages 47.7 inches of rain a year
Snow: averages 6.9 inches of snow a year

BestPlaces Comfort Index

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

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

Today's Weather - Cairo, IL

72°F

Today's Weather - Fairmont City, IL

77°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Cairo / Fairmont City

July is the hottest month for Cairo with an average high temperature of 89.2°, which ranks it as one of the hottest places in Illinois. In Cairo, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Cairo are May, September and October.

July is the hottest month for Fairmont City with an average high temperature of 88.5°, which ranks it as one of the hottest places in Illinois. In Fairmont City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fairmont City are May, September and June.

January has the coldest nighttime temperatures for Cairo with an average of 25.5°. This is one of the warmest places in Illinois.

January has the coldest nighttime temperatures for Fairmont City with an average of 22.6°. This is one of the warmest places in Illinois.

In Cairo, there are 41.9 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Fairmont City, there are 35.4 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

In Cairo, there are 81.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Fairmont City, there are 93.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Cairo, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

In Fairmont City, there are 1.4 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

May is the wettest month in Cairo with 5.0 inches of rain, and the driest month is August with 2.7 inches. The wettest season is Summer with 29% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 47.7 inches in Cairo means that it is one of the wettest places in Illinois.


May is the wettest month in Fairmont City 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 Fairmont City means that it is wetter than most places in Illinois.

May is the rainiest month in Cairo with 10.6 days of rain, and August is the driest month with only 6.1 rainy days. There are 103.4 rainy days annually in Cairo, which is less rainy 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 22% chance of a rainy day.

May is the rainiest month in Fairmont City with 11.3 days of rain, and September is the driest month with only 6.8 rainy days. There are 103.7 rainy days annually in Fairmont City, 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 23% chance of a rainy day.

An annual snowfall of 6.9 inches in Cairo means that it is one of the least snowy places in Illinois.

An annual snowfall of 13.2 inches in Fairmont City means that it is less snowy than most places in Illinois.

February is the snowiest month in Cairo with 2.6 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Fairmont City with 4.1 inches of snow, and 4 months of the year have significant snowfall.