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

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Fair

23°F

-5°C

Humidity 83%
Wind Speed N 10 mph
Barometer 30.33 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 8 Dec 6:15 am CST
Extended Forecast for

Greenville IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 33. North wind 5 to 7 mph becoming calm in the morning.

    High: 33 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Increasing clouds, with a temperature falling to near 22 by 8pm, then rising to around 30 during the remainder of the night. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 20 mph.

    Low: 22 °F⇑

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 49. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 49 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 43 by 8am, then falling to around 36 during the remainder of the day. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.

    High: 43 °F⇓

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 35.

    High: 35 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 33. North wind 5 to 7 mph becoming calm in the morning.
Tonight
Increasing clouds, with a temperature falling to near 22 by 8pm, then rising to around 30 during the remainder of the night. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 49. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 42. South wind 14 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 43 by 8am, then falling to around 36 during the remainder of the day. Northwest wind 10 to 18 mph, with gusts as high as 28 mph.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 35.
Thursday Night
Mostly cloudy, with a low around 19.
Friday
Partly sunny, with a high near 31.
Friday Night
Mostly cloudy, with a low around 6.
Saturday
Partly sunny and cold, with a high near 18.
Saturday Night
Mostly cloudy, with a low around 7.
Sunday
Mostly sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Greenville IL
 38.91°N 89.42°W (Elev. 486 ft)
Last Update:
4:01 am CST Dec 8, 2025
Forecast Valid:
6am CST Dec 8, 2025-6pm CST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation