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

Hazardous Weather Conditions

Current conditions at

Effingham, Effingham County Memorial Airport (K1H2)

Lat: 39.07°NLon: 88.53°WElev: 587ft.

Fog

70°F

21°C

Humidity 99%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 69°F (21°C)
Visibility 0.50 mi
Last update 17 Jun 4:35 am CDT
Extended Forecast for

Brownstown IL

Dense Fog Advisory until June 17, 09:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until June 17, 09:00am

    NOW until 9:00am Tue

    Dense Fog Advisory

  • Overnight

    Low: 69 °F

    Cloudy

  • Tuesday

    Tuesday: Cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming south around 5 mph.

    High: 85 °F

    Gradual
    Clearing

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 72. South wind 3 to 6 mph.

    Low: 72 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms after 4pm. High near 84. Southwest wind 8 to 14 mph. Chance of precipitation is 80%.

    High: 84 °F

    Chance
    T-storms then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms, mainly before 7pm. Low around 66. Southwest wind 6 to 10 mph. Chance of precipitation is 80%.

    Low: 66 °F

    T-storms then
    Chance
    Showers

  • Juneteenth

    Juneteenth: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

Overnight
Cloudy, with a low around 69. Calm wind.
Tuesday
Cloudy through mid morning, then gradual clearing, with a high near 85. Calm wind becoming south around 5 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 72. South wind 3 to 6 mph.
Wednesday
A chance of showers and thunderstorms before 1pm, then showers and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms after 4pm. High near 84. Southwest wind 8 to 14 mph. Chance of precipitation is 80%.
Wednesday Night
Showers and thunderstorms, mainly before 7pm. Low around 66. Southwest wind 6 to 10 mph. Chance of precipitation is 80%.
Juneteenth
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 72.
Saturday
Sunny, with a high near 92.
Saturday Night
Mostly clear, with a low around 76.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 74.
Monday
Sunny, with a high near 92.
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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:
1:36 am CDT Jun 17, 2025
Forecast Valid:
4am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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