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NWS St. Louis Announces Changes To May 16, 2025 Tornado Damage Assessment

After a year-long review of new ground survey data and aerial imagery, NWS St. Louis made several adjustments to the May 16, 2025 tornado damage assessment. Read More >

Hazardous Weather Conditions

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Partly Cloudy

82°F

28°C

Humidity 57%
Wind Speed SE 13 G 20 mph
Barometer 29.94 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 May 2:55 pm CDT
Extended Forecast for

Brownstown IL

  • Tonight

    Tonight: Increasing clouds, with a low around 69. South wind 13 to 16 mph, with gusts as high as 23 mph.

    Low: 69 °F

    Increasing
    Clouds

  • Monday

    Monday: Showers and thunderstorms likely, mainly between 1pm and 5pm. Mostly cloudy, with a high near 83. Breezy, with a south wind 14 to 20 mph. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    T-storms then
    T-storms
    Likely and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 69. South wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. South wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 83 °F

    Chance
    T-storms then
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 57. West wind 7 to 10 mph becoming north after midnight. Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 54.

    Low: 54 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Increasing clouds, with a low around 69. South wind 13 to 16 mph, with gusts as high as 23 mph.
Monday
Showers and thunderstorms likely, mainly between 1pm and 5pm. Mostly cloudy, with a high near 83. Breezy, with a south wind 14 to 20 mph. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers and thunderstorms after 4am. Mostly cloudy, then gradually becoming mostly clear, with a low around 69. South wind 13 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. South wind 13 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 57. West wind 7 to 10 mph becoming north after midnight. Chance of precipitation is 80%.
Wednesday
Partly sunny, with a high near 69.
Wednesday Night
Mostly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 70.
Thursday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 54.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 74. Chance of precipitation is 20%.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 59.
Saturday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 79.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Sunday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Brownstown IL
 39°N 88.96°W (Elev. 558 ft)
Last Update:
1:26 pm CDT May 17, 2026
Forecast Valid:
3pm CDT May 17, 2026-6pm CDT May 24, 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