Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Fair

81°F

27°C

Humidity 76%
Wind Speed NA
Barometer 29.92 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 19 Aug 4:35 pm CDT
Extended Forecast for

4 Miles N Smithboro IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 80. Light west wind.

    High: 80 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 4am, then a slight chance of showers.  Patchy fog after 2am.  Otherwise, mostly cloudy, with a low around 68. Calm wind.  Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms and
    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 84.

    High: 84 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Light west wind.
Tonight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 68. Calm wind. Chance of precipitation is 30%.
Thursday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 82. Calm wind becoming northeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64. Calm wind.
Friday
Sunny, with a high near 84. Light and variable wind.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 65.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Mostly sunny, with a high near 82.
Sunday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 62.
Monday
A 20 percent chance of showers. Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 66.
Wednesday
Mostly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Smithboro IL
 38.95°N 89.33°W (Elev. 548 ft)
4:16 pm CDT Aug 19, 2026
4pm CDT Aug 19, 2026-6pm CDT Aug 26, 2026
 
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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