Decatur

Sedgwick County, Illinois, United States

Forecast Summary

The next few hours will be partly cloudy, with today reaching 24°C and dropping to 11°C. The coming days will be hazy throughout the day.

Current Weather

24°

Clear

Feels Like

23°

Min

11°

Max

24°

Compared to Yesterday

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Upgrade Now

Hourly Forecast

Weather forecast for the next 48 hours.

24° 22° 20° 18° 17° 16° 15° 15° 14° 13° 12° 11° 11° 11° 12° 14° 15° 16° 17° 18° 18° 18° 18° 18° 18° 17° 14° 13° 12° 11° 10° 11° 13° 16° 17° 18° 20° 20° 20° 21° 20°

6%

10%

11%

8%

6%

6%

6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
Today
Tomorrow
Monday

UV Index

No protection needed

2 Low
Low Extreme

Humidity

Current air moisture level

46% Dry
Low High

Daylight Hours

14 hours 0 minutes of sunlight today

05:52

Sunrise

19:52

Sunset

Daily Forecast

Weather forecast for the next 8 days.

Today

11°
24°

Sunday

11°
18°

Monday

21°

Tuesday

24°

Wednesday

13°
21°

Thursday

22°

Friday

14°
26°

Saturday

17°
30°

Air Quality Data Available

Upgrade to access real-time air quality data for Decatur.

Upgrade Now
Powered by Airpult

Frequently asked questions about weather in Decatur

How warm does it get in Decatur?

The warmest month in Decatur is July, with average high temperatures of 29°C. The average temperature during this period is around 25°C.

How cold does it get in Decatur?

The coldest month in Decatur is January, with average low temperatures of -5°C. The average temperature during this period is around -1°C.

What is the wettest time of year in Decatur?

The wettest month in Decatur is July, with an average of 129mm of precipitation.

What is the driest time of year in Decatur?

The driest month in Decatur is February, with an average of 65mm of precipitation.

View full climate insights for Decatur →

Stay informed

Latest Weather News

  ·  

   

  ·  

   

  ·  

   

  ·  

   

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

Cookie Settings
gb English
Metric (°C, km/h)

Confirm