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

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Harlan (KI35)

Lat: 36.86°NLon: 83.36°WElev: 1551ft.

Overcast

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 21 Aug 5:35 pm EDT
Extended Forecast for

Grays Knob KY

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Patchy fog after midnight. Otherwise, mostly clear, with a low around 64. Calm wind.

    Low: 64 °F

    Chance
    T-storms then
    Patchy Fog

  • Saturday

    Saturday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon.

    High: 84 °F

    Areas Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 61. Light west northwest wind. Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, sunny, with a high near 80. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Areas of fog after 5am. Otherwise, mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear
    then Areas
    Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, sunny, with a high near 81.

    High: 81 °F

    Areas Fog
    then Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Patchy fog after midnight. Otherwise, mostly clear, with a low around 64. Calm wind.
Saturday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 61. Light west northwest wind. Chance of precipitation is 40%.
Sunday
Patchy fog before 10am. Otherwise, sunny, with a high near 80. Calm wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Areas of fog after 5am. Otherwise, mostly clear, with a low around 54. Calm wind.
Monday
Areas of fog before 9am. Otherwise, sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A 30 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 85.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Thursday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grays Knob KY
 36.81°N 83.27°W (Elev. 1365 ft)
Last Update:
3:01 pm EDT Aug 21, 2026
Forecast Valid:
6pm EDT Aug 21, 2026-6pm EDT Aug 28, 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