2025 Compare Climate & Weather:
Decatur, IL vs Lenexa, KS

Highlights

On average, there are 220 sunny days per year in Lenexa. Decatur averages 199 sunny days per year. The US average is 205 sunny days.

Lenexa, Kansas gets 41 inches of rain, on average, per year. Decatur, Illinois gets 39.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Lenexa averages 15.5 inches of snow per year. Decatur averages 13 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Lenexa, Kansas
Summer High: the July high is around 88.2 degrees
Winter Low: the January low is 20
Rain: averages 41 inches of rain a year
Snow: averages 15.5 inches of snow a year

Decatur, Illinois
Summer High: the July high is around 86.9 degrees
Winter Low: the January low is 18.8
Rain: averages 39.5 inches of rain a year
Snow: averages 13 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Lenexa is 7.2 (10=best), which means it is less comfortable than most places in Kansas.

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

Today's Weather - Decatur, IL

58°F

Today's Weather - Lenexa, KS

65°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Decatur / Lenexa

July is the hottest month for Decatur with an average high temperature of 86.9°, which ranks it as warmer than most places in Illinois. In Decatur, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Decatur are September, May and June.

July is the hottest month for Lenexa with an average high temperature of 88.2°, which ranks it as one of the coolest places in Kansas. In Lenexa, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Lenexa are September, May and June.

January has the coldest nighttime temperatures for Decatur with an average of 18.8°. This is warmer than most places in Illinois.

January has the coldest nighttime temperatures for Lenexa with an average of 20.0°. This is warmer than most places in Kansas.

In Decatur, there are 24.8 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

In Lenexa, there are 29.7 days annually when the high temperature is over 90°, which is one of the coolest places in Kansas.

In Decatur, there are 112.5 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Lenexa, there are 106.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Kansas.

In Decatur, there are 4.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

In Lenexa, there are 2.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Kansas.

June is the wettest month in Decatur with 4.5 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 31% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 39.5 inches in Decatur means that it is about average compared to other places in Illinois.


June is the wettest month in Lenexa with 5.9 inches of rain, and the driest month is January with 1.2 inches. The wettest season is Autumn with 34% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 41.0 inches in Lenexa means that it is wetter than most places in Kansas.

May is the rainiest month in Decatur with 11.5 days of rain, and September is the driest month with only 6.9 rainy days. There are 104.3 rainy days annually in Decatur, 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.

May is the rainiest month in Lenexa with 10.9 days of rain, and January is the driest month with only 5.1 rainy days. There are 91.0 rainy days annually in Lenexa, which is rainier than most places in Kansas. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 18% chance of a rainy day.

An annual snowfall of 13.0 inches in Decatur means that it is less snowy than most places in Illinois.

An annual snowfall of 15.5 inches in Lenexa means that it is about average compared to other places in Kansas.

January is the snowiest month in Decatur with 4.2 inches of snow, and 4 months of the year have significant snowfall.

January is the snowiest month in Lenexa with 4.5 inches of snow, and 5 months of the year have significant snowfall.