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.

Overcast

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 21 Jun 1:35 am CDT
Extended Forecast for

5 Miles NW Brownstown IL

Flood Watch June 21, 07:00am until June 22, 01:00am
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 66. Calm wind becoming east around 5 mph.

    Low: 66 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms. High near 81. East wind 8 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.

    High: 81 °F

    Chance
    T-storms then
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms, mainly before 11pm. Low around 63. Southwest wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 90%.

    Low: 63 °F

    T-storms then
    Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, with a high near 75. North wind 9 to 11 mph.

    High: 75 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57. North wind 3 to 7 mph.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 66. Calm wind becoming east around 5 mph.
Sunday
Showers and thunderstorms. High near 81. East wind 8 to 14 mph becoming south in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Sunday Night
Showers and thunderstorms, mainly before 11pm. Low around 63. Southwest wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 90%.
Monday
A 20 percent chance of showers and thunderstorms before 9am. Mostly cloudy, with a high near 75. North wind 9 to 11 mph.
Monday Night
Partly cloudy, with a low around 57. North wind 3 to 7 mph.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 62.
Thursday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 80.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NW Brownstown IL
 39.05°N 89.02°W (Elev. 499 ft)
Last Update:
1:26 am CDT Jun 21, 2026
Forecast Valid:
1am CDT Jun 21, 2026-6pm CDT Jun 27, 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