National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Robinson Municipal Airport (KRSV)

Lat: 39.01°NLon: 87.65°WElev: 449ft.

Fair

68°F

20°C

Humidity 35%
Wind Speed N 13 mph
Barometer 29.98 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 13 May 6:55 pm CDT
Extended Forecast for

West Union IL

  • Tonight

    Tonight: Mostly clear, with a low around 42. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph.

    Low: 42 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 69. Calm wind becoming north around 5 mph.

    High: 69 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 48. Calm wind becoming south southeast around 6 mph after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 74. South wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 21 mph.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    T-storms
    Likely

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. South southwest wind around 6 mph.

    Low: 64 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 42. North wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 69. Calm wind becoming north around 5 mph.
Thursday Night
Increasing clouds, with a low around 48. Calm wind becoming south southeast around 6 mph after midnight.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly cloudy, with a high near 74. South wind 9 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 21 mph.
Saturday
Showers and thunderstorms likely, mainly after 1pm. Partly sunny, with a high near 82. Southwest wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 64. South southwest wind around 6 mph.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 67.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Breezy.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Tuesday
Showers and possibly a thunderstorm. Partly sunny, with a high near 83.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 64.
Wednesday
A chance of showers. Partly sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Union IL
 39.2°N 87.66°W (Elev. 486 ft)
Last Update:
1:51 pm CDT May 13, 2026
Forecast Valid:
7pm CDT May 13, 2026-6pm CDT May 20, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation