Lala Approaching Hawaii; Flash Flooding Risks; Excessive Heat

Lala, may become a hurricane, is expected to impact Hawaii this weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians continues, with the threat shifting toward the mid-Atlantic later this weekend. Record heat continues for areas of the South. Read More >

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

83°F

28°C

Humidity 75%
Wind Speed NA
Barometer 30.13 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 15 Aug 11:15 am CDT
Extended Forecast for

4 Miles N Greenville IL

Heat Advisory August 15, 11:41am until August 16, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 15, 11:41am until August 16, 09:00pm

    NOW until 9:00pm Sun

    Heat Advisory

  • Today

    High: 91 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am.  Mostly clear, with a low around 75. Light south wind.

    Low: 75 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 106. West wind 3 to 7 mph.

    High: 91 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am.  Partly cloudy, with a low around 70. Northwest wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 84. North wind 3 to 6 mph.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 71.

    Low: 71 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before noon. Partly sunny, with a high near 91. Heat index values as high as 106. Southeast wind around 6 mph becoming southwest in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 75. Light south wind.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 91. Heat index values as high as 106. West wind 3 to 7 mph.
Sunday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 70. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 84. North wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Sunny, with a high near 86.
Tuesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Wednesday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 81.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Friday
Mostly sunny, with a high near 80.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Greenville IL
 38.95°N 89.39°W (Elev. 515 ft)
9:56 am CDT Aug 15, 2026
11am CDT Aug 15, 2026-6pm CDT Aug 21, 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