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

Hazardous Weather Conditions

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Overcast

57°F

14°C

Humidity 93%
Wind Speed E 5 mph
Barometer 30.03 in
Dewpoint 55°F (13°C)
Visibility 7.00 mi
Last update 1 Apr 1:15 pm CDT
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm. Cloudy, with a high near 58. Northeast wind around 8 mph. Chance of precipitation is 70%.

    High: 58 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a temperature falling to near 55 by 8pm, then rising to around 64 during the remainder of the night. Northeast wind 8 to 11 mph becoming south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.

    Low: 55 °F⇑

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 75. Breezy, with a south wind 15 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.

    High: 75 °F

    Breezy.
    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 10pm, then showers likely between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. South wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 64. Chance of precipitation is 80%.

    High: 64 °F

    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm. Cloudy, with a high near 58. Northeast wind around 8 mph. Chance of precipitation is 70%.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a temperature falling to near 55 by 8pm, then rising to around 64 during the remainder of the night. Northeast wind 8 to 11 mph becoming south after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 75. Breezy, with a south wind 15 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.
Thursday Night
Showers and thunderstorms likely before 10pm, then showers likely between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. South wind 8 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. High near 64. Chance of precipitation is 80%.
Saturday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 37.
Sunday
Sunny, with a high near 54.
Sunday Night
Clear, with a low around 33.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
12:06 pm CDT Apr 1, 2026
Forecast Valid:
1pm CDT Apr 1, 2026-6pm CDT Apr 7, 2026
 
Forecast Discussion
 
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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