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 >

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

70°F

21°C

Humidity 100%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Last update 19 Aug 3:00 am CDT
Extended Forecast for

3 Miles SW Troy Grove IL

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 67. West southwest wind around 5 mph.

    Low: 67 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 9am.  Otherwise, partly sunny, with a high near 80. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 80 °F

    Areas Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. North northeast wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. North northeast wind around 5 mph becoming calm  in the morning.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Mostly sunny, with a high near 79.

    High: 79 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 67. West southwest wind around 5 mph.
Wednesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 80. Calm wind becoming north northwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 61. North northeast wind around 5 mph.
Thursday
Sunny, with a high near 80. North northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 61. Calm wind.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 79.
Friday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Troy Grove IL
 41.45°N 89.11°W
3:01 am CDT Aug 19, 2026
3am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database