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Unionville, Illinois Weather Forecast
Unionville, Illinois Weather
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Weather Forecast for Unionville, Illinois : Massac County
Issued: 2:26 pm CST Jan 20, 2026 Latitude: 37.1222782 Longitude: -88.5467121 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on This Afternoon 30% chance of snow on Tonight 50% chance of rain on Wednesday Mostly Sunny on Thursday 20% chance of snow on Friday Snow on Saturday 10% chance of snow on Sunday Mostly Sunny on Monday
High: 36°F Low: 27 °F High: 45°F High: 42°F High: 25°F High: 17°F High: 23°F High: 24°F
Low: 26°F Low: 22°F Low: 9 °F Low: 11°F Low: 5 °F  
Sunny Snow Rain Mostly Sunny Snow Snow Snow Mostly Sunny
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Current Conditions at
PADUCAH - (KPAH)
36°
Clear
as of 1:53 PM CST
Rel. Humidity: 29%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
7 MPH
190° South
Cloud Level(s): Clear
Current Conditions at
CAIRO - (KCIR)
37°
Clear
as of 2:15 PM CST
Rel. Humidity: 27%
Dew Point: 7°F
Visibility: 10 Miles
Pressure: 30.43 in.
Flight Rule: VFR
Wind Data
8 MPH
180° South
Cloud Level(s): Clear
Current Conditions at
MARION - (KMWA)
34°
Feels like 24°F
Clear
as of 1:45 PM CST
Rel. Humidity: 29%
Dew Point: 5°F
Visibility: 10 Miles
Pressure: 30.41 in.
Flight Rule: VFR
Wind Data
13 MPH
180° South
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 36. South wind 3 to 5 mph.
30% chance of snow Tonight Tonight... A 30 percent chance of snow, mainly after 4am. Increasing clouds, with a temperature falling to near 27 by 8pm, then rising to around 34 during the remainder of the night. South southeast wind 3 to 6 mph.
50% chance of rain Wednesday Wednesday... Drizzle likely before 9am, then a chance of rain between 9am and noon. Mostly cloudy, with a high near 45. South southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Cloudy on Wednesday Night Wednesday Night... Partly cloudy, with a low around 26. Light and variable wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 42. Light north northeast wind.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 22. Calm wind becoming north northeast around 6 mph after midnight.
20% chance of snow Friday Friday... A 20 percent chance of snow after noon. Mostly cloudy, with a high near 25. North wind 7 to 10 mph, with gusts as high as 20 mph.
20% chance of snow Friday Night Friday Night... A chance of snow. Cloudy, with a low around 9. North northeast wind around 8 mph.
Snow on Saturday Saturday... Snow likely, mainly after noon. Cloudy, with a high near 17. North northeast wind 7 to 10 mph, with gusts as high as 18 mph.
Snow on Saturday Night Saturday Night... Snow likely, mainly before midnight. Cloudy, with a low around 11. North northeast wind around 6 mph.
10% chance of snow Sunday Sunday... A slight chance of snow. Mostly cloudy, with a high near 23. North wind 3 to 6 mph.
Cloudy on Sunday Night Sunday Night... Partly cloudy, with a low around 5. Calm wind.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 24. 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.