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

Big Sandy Regional Airport (KSJS)

Lat: 37.75°NLon: 82.64°WElev: 1220ft.

Overcast

80°F

27°C

Humidity 62%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 19 Aug 5:50 pm EDT
Extended Forecast for

4 Miles ENE Isonville KY

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 4am.  Increasing clouds, with a low around 67. Calm wind.  Chance of precipitation is 30%.

    Low: 67 °F

    Partly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and 1pm, then a slight chance of showers and thunderstorms after 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 84. Light west southwest wind.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then a chance of showers after 9pm.  Partly cloudy, with a low around 67. Calm wind.  Chance of precipitation is 40%.

    Low: 67 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 84. Calm wind.  Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am.  Patchy fog after midnight.  Otherwise, partly cloudy, with a low around 64. Calm wind.  Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    T-storms then
    Slight Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 9am.  Otherwise, mostly sunny, with a high near 85.

    High: 85 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, with thunderstorms also possible after 4am. Increasing clouds, with a low around 67. Calm wind. Chance of precipitation is 30%.
Thursday
Showers and thunderstorms likely before 11am, then a slight chance of showers between 11am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 84. Light west southwest wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 9pm. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 40%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Calm wind. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog after midnight. Otherwise, partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%.
Saturday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Mostly clear, with a low around 59.
Monday
Mostly sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A 20 percent chance of showers. Partly cloudy, with a low around 62.
Wednesday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ENE Isonville KY
 38.09°N 82.98°W (Elev. 899 ft)
4:21 pm EDT Aug 19, 2026
6pm EDT Aug 19, 2026-6pm EDT Aug 26, 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