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

Areas of Dangerous Heat and Heavy Rainfall Today

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley today. Heat Advisories remain in effect. Heavy to excessive rainfall today could bring areas of flooding to parts of the northern High Plains and Midwest into the Ohio Valley. Flood Watches remain in effect. Read More >

Hazardous Weather Conditions

Current conditions at

Glasgow, Glasgow Municipal Airport (KGLW)

Lat: 37.03°NLon: 85.95°WElev: 715ft.

Mostly Cloudy

93°F

34°C

Humidity 39%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index95°F (35°C)
Last update 20 Sep 3:35 pm CDT
Extended Forecast for

Mammoth Cave KY

Heat Advisory September 20, 04:02pm until September 20, 07:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory September 20, 04:02pm until September 20, 07:00pm

    NOW until 7:00pm Sun

    Heat Advisory

  • Tonight

    Low: 71 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of showers between 3pm and 4pm. Partly sunny, with a high near 93. Light and variable wind. Chance of precipitation is 20%.

    High: 93 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 3am, then a chance of showers between 3am and 5am. Mostly cloudy, with a low around 65. Light north wind. Chance of precipitation is 40%.

    Low: 65 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A 40 percent chance of showers, mainly after 7am. Partly sunny, with a high near 81. Light north wind.

    High: 81 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.

    Low: 61 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Wednesday Night

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

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 71. Calm wind.
Monday
A slight chance of showers between 3pm and 4pm. Partly sunny, with a high near 93. Light and variable wind. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms before 3am, then a chance of showers between 3am and 5am. Mostly cloudy, with a low around 65. Light north wind. Chance of precipitation is 40%.
Tuesday
A 40 percent chance of showers, mainly after 7am. Partly sunny, with a high near 81. Light north wind.
Tuesday Night
Mostly cloudy, with a low around 61. North wind around 5 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Cave KY
 37.19°N 86.09°W (Elev. 600 ft)
Last Update:
2:06 pm CDT Sep 20, 2026
Forecast Valid:
4pm CDT Sep 20, 2026-6pm CDT Sep 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