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Weather in Decatur, Illinois, USA

Now
46 °F

Fog.


Feels Like: 46 °F
Forecast: 82 / 47 °F
Wind: No wind

Location: Decatur Airport
Current Time: Mar 21, 2026 at 8:36:16 am
Latest Report: Mar 21, 2026 at 7:54 am
Visibility: 5 mi
Pressure: 29.91 "Hg
Humidity: 89%
Dew Point: 43 °F
Location of DecaturLocation

Upcoming 5 hours

Now9:00 am10:00 am11:00 am12:00 pm1:00 pm
46 °F54 °F60 °F66 °F71 °F75 °F

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Forecast for the next 48 hours

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 SaturdaySunday
 MorningAfternoonEveningNightMorningAfternoonEvening
Forecast
Temperature54 °F80 °F68 °F64 °F66 °F71 °F44 °F
Scatt­erred clouds.Sunny.Clear.Cloudy.Partly cloudy.Overcast.Overcast.
Feels Like52 °F79 °F68 °F64 °F66 °F77 °F37 °F
Wind Speed6 mph10 mph9 mph11 mph10 mph14 mph16 mph
Wind DirectionSE
SSW
SSW
SSW
SW
N
N
Humidity69%33%58%72%67%49%70%
Dew Point44 °F48 °F53 °F54 °F55 °F51 °F35 °F
Visibility7 mi9 mi6 mi6 mi7 mi7 mi7 mi
Probability of Precipitation0%0%0%0%0%0%0%
Amount of Rain0.00"0.00"0.00"0.00"0.00"0.00"0.00"
Amount of Snow0.00"0.00"0.00"0.00"0.00"0.00"0.00"
* Updated Saturday, March 21, 2026 2:42:42 am Decatur time - Weather by CustomWeather, © 2026

14 day forecast, day-by-dayHour-by-hour forecast for next week

Yesterday's weather

Sunny. 83 / 48 °F
Humidity: 52%. Wind: 11 mph from Southwest

More weather last week

Currently at nearby stations

50 °F

Taylorville Municipal Airport: (29 mi)

Sunny.

47 °F

University Of Illinois-Willard Airport: (38 mi)

Fog.

46 °F

Bloomington / Normal: (44 mi)

Sunny.

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Forecast for the next 2 weeks

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Detailed forecast for 14 days