Decatur, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Cloudy 23°F
Feels Like 19°F  
Humidity 77% Dew Point 17°F Wind W 3 MPH Gusts 6 Barometer 30.32 in.
Solar Rad 177 w/m2 UV Index 1
Report from a personal weather station 3.4 mi. NNW of central Decatur
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Point Forecast at a Glance

SunNov 30
Sun Nov 30: Scattered Flurries Before 3pm, High 26F, Low 16F
26
16
MonDec 1
Mon Dec 1: Snow, High 29F, Low 16F
60%
29
16
TueDec 2
Tue Dec 2: Partly Sunny, High 24F, Low 15F
24
15
WedDec 3
Wed Dec 3: Partly Sunny, High 33F, Low 8F
33
8
ThuDec 4
Thu Dec 4: Mostly Sunny, High 16F, Low 1F
16
1
FriDec 5
Fri Dec 5: Snow, High 26F, Low 19F
50%
26
19
SatDec 6
Sat Dec 6: Mostly Cloudy, High 32F
32
 

7-Day Temperature Trend

Week Ahead Summary

Variable high temperatures with a significant drop to 16°F mid-week, recovering to 32°F. Some snow possible with at least 3 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 17°F below the historical average for November-December. Normal highs for this period are around 44°F with lows around 28°F.

This Date in Weather History

1875 - A severe early season cold wave set November records in the northeastern U.S. The temperature dipped to 5 above zero at New York City, 2 below at Boston MA, and 13 below at Eastport ME.

More on this and other weather history

Decatur, IL 7 Day Weather Forecast Details

Sunday Nov 30

Scattered Flurries Before 3pm

Day: Scattered flurries before 3pm. Cloudy, with a high near 26. West wind 9 to 17 mph, with gusts as high as 31 mph.

Cloudy

Night: Cloudy, with a low around 16. West northwest wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 17 mph.

Monday Dec 1

Snow

Day: Snow likely after noon. Cloudy, with a high near 29. Light southeast wind. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Snow

Night: Snow before midnight. Low around 16. Calm wind becoming northwest around 6 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Tuesday Dec 2

Partly Sunny

Day: Partly sunny, with a high near 24. Northwest wind around 6 mph becoming southwest in the afternoon.

Mostly Cloudy

Night: Mostly cloudy, with a low around 15. South wind 3 to 8 mph.

Wednesday Dec 3

Partly Sunny

Day: Partly sunny, with a high near 33. South southwest wind 8 to 10 mph, with gusts as high as 16 mph.

Mostly Cloudy

Night: Mostly cloudy, with a low around 8.

Thursday Dec 4

Mostly Sunny

Day: Mostly sunny, with a high near 16.

Mostly Cloudy

Night: Mostly cloudy, with a low around 1.

Friday Dec 5

Snow

Day: A chance of snow. Mostly cloudy, with a high near 26.

Mostly Cloudy

Night: Mostly cloudy, with a low around 19.

Saturday Dec 6

Mostly Cloudy

Day: Mostly cloudy, with a high near 32.


About Decatur, IL

Decatur ( dih-KAY-tər) is the largest city in Macon County, Illinois, United States, and its county seat. The city was founded in 1829 and is situated along the Sangamon River and Lake Decatur in Central Illinois. As of the 2020 census, it had a population of 70,522. It is the 17th-most populous city in Illinois and the sixth-most populous outside the Chicago metropolitan area. Decatur has an economy based on industrial and agricultural commodity processing and production. The city is home to Millikin University and Richland Community College.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

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