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.

Light Rain

62°F

17°C

Humidity 39%
Wind Speed E 6 mph
Barometer 29.96 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 28 Feb 4:55 pm CST
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 63. Light east wind.

    High: 63 °F

    Chance Rain

  • Tonight

    Tonight: A slight chance of rain and thunderstorms before 7pm, then a slight chance of rain between 7pm and 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 31. Light northeast wind becoming north 8 to 13 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 44. Northeast wind 8 to 13 mph, with gusts as high as 22 mph.

    High: 44 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Snow likely, mainly after midnight. Cloudy, with a low around 31. East wind 7 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 31 °F

    Snow Likely

  • Monday

    Monday: A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 43. East wind 7 to 10 mph. Chance of precipitation is 50%.

    High: 43 °F

    Chance
    Rain/Snow
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: Rain. Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Rain

  • Tuesday

    Tuesday: Rain, with thunderstorms also possible after noon. High near 62. Chance of precipitation is 90%.

    High: 62 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.

    High: 64 °F

    Rain

Detailed Forecast

This Afternoon
A 30 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 63. Light east wind.
Tonight
A slight chance of rain and thunderstorms before 7pm, then a slight chance of rain between 7pm and 8pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 31. Light northeast wind becoming north 8 to 13 mph in the evening. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Sunday
Increasing clouds, with a high near 44. Northeast wind 8 to 13 mph, with gusts as high as 22 mph.
Sunday Night
Snow likely, mainly after midnight. Cloudy, with a low around 31. East wind 7 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Monday
A chance of rain and snow before 9am, then a chance of rain. Cloudy, with a high near 43. East wind 7 to 10 mph. Chance of precipitation is 50%.
Monday Night
Rain. Low around 38. Chance of precipitation is 80%.
Tuesday
Rain, with thunderstorms also possible after noon. High near 62. Chance of precipitation is 90%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 52. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm. High near 64. Chance of precipitation is 80%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 70. Chance of precipitation is 70%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Saturday
Rain likely. Cloudy, with a high near 63. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
4:36 pm CST Feb 28, 2026
Forecast Valid:
5pm CST Feb 28, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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