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

Big Sandy Regional Airport (KSJS)

Lat: 37.75°NLon: 82.64°WElev: 1220ft.

Overcast

71°F

22°C

Humidity 98%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 21 Aug 11:35 am EDT
Extended Forecast for

Prestonsburg KY

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 86. Calm wind.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms before 8pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 65. Calm wind.

    Low: 65 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.

    High: 86 °F

    Areas Fog
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, sunny, with a high near 83. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 11pm. Otherwise, mostly clear, with a low around 55.

    Low: 55 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 10am. Otherwise, mostly sunny, with a high near 83.

    High: 83 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 86. Calm wind.
Tonight
A 10 percent chance of showers and thunderstorms before 8pm. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 65. Calm wind.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming west around 6 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63. Calm wind. Chance of precipitation is 30%.
Sunday
Patchy fog before 10am. Otherwise, sunny, with a high near 83. Calm wind becoming west northwest around 6 mph in the afternoon.
Sunday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 55.
Monday
Areas of fog before 10am. Otherwise, mostly sunny, with a high near 83.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Wednesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Prestonsburg KY
 37.67°N 82.78°W (Elev. 642 ft)
Last Update:
10:56 am EDT Aug 21, 2026
Forecast Valid:
11am EDT Aug 21, 2026-6pm EDT Aug 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