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Unionville, Illinois Weather Forecast
Unionville, Illinois Weather
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Weather Forecast for Unionville, Illinois : Massac County
Issued: 8:02 am CST Jan 20, 2026 Latitude: 37.1222782 Longitude: -88.5467121 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today 20% chance of snow on Tonight 40% chance of rain on Wednesday Mostly Sunny on Thursday Mostly Cloudy on Friday Snow on Saturday Mostly Sunny on Sunday Sunny on Monday
High: 36°F Low: 27 °F High: 45°F High: 42°F High: 29°F High: 18°F High: 24°F High: 28°F
Low: 27°F Low: 21°F Low: 9 °F Low: 9 °F Low: 8 °F  
Sunny Snow Rain Mostly Sunny Mostly Cloudy Snow Mostly Sunny Sunny
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Current Conditions at
PADUCAH - (KPAH)
12°
Clear
as of 7:53 AM CST
Rel. Humidity: 78%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.52 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
14°
Clear
as of 7:55 AM CST
Rel. Humidity: 85%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.54 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
12°
Mostly Cloudy
as of 7:45 AM CST
Rel. Humidity: 78%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.51 in.
Flight Rule: VFR
Wind Data
7 MPH
150° Southeast
Cloud Level(s): Broken at 7500ft
Sunny on Today Today... Sunny, with a high near 36. Calm wind becoming south 5 to 9 mph in the morning.

20% chance of snow Tonight Tonight... A 20 percent chance of snow showers after 4am. Increasing clouds, with a temperature falling to near 27 by 11pm, then rising to around 34 during the remainder of the night. South wind 6 to 10 mph, with gusts as high as 20 mph.

40% chance of rain Wednesday Wednesday... A 40 percent chance of showers, mainly before 10am. Mostly cloudy, with a high near 45. South southwest wind 5 to 11 mph, with gusts as high as 21 mph.

Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 27. Light and variable wind.

Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 42. Light north wind.

Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 21. Calm wind becoming north northeast around 5 mph after midnight.

Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 29. North northeast wind 5 to 9 mph.

20% chance of snow Friday Night Friday Night... A chance of snow showers. Cloudy, with a low around 9. North northeast wind around 7 mph.

Snow on Saturday Saturday... Snow showers likely, mainly after noon. Cloudy, with a high near 18. North northeast wind 7 to 9 mph.

20% chance of snow Saturday Night Saturday Night... A chance of snow showers. Mostly cloudy, with a low around 9. North northeast wind around 6 mph.

Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 24. North wind 3 to 6 mph.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 8. Calm wind.

Sunny on Monday Monday... Sunny, with a high near 28. Calm wind becoming west northwest around 5 mph.

Current Radar Image


Sun Almanac for Unionville, Illinois
Sunrise: 07:05 AM
Sunset: 5:06 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:34 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 6:06 PM
Astro Sunrise: 05:34 AM
Astro Sunset: 6:37 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.