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Mammoth Cave National Park, KY Weather Forecast
Wx Discussion - Wx Hazards - Wx Aviation
NWS Forecast for Mammoth Cave KY
National Weather Service Forecast for: Mammoth Cave KY
Issued by: National Weather Service Louisville, KY
Updated: 4:28 am CDT Sep 17, 2026
 
Today

Today: Sunny and hot, with a high near 97. Heat index values as high as 100. Light and variable wind.
Hot
 Tonight

Tonight: Mostly clear, with a low around 71. Calm wind.
Mostly Clear
 Friday

Friday: Sunny and hot, with a high near 96. Light and variable wind.
Hot
 Friday
Night
Friday Night: Mostly clear, with a low around 70. Calm wind.
Mostly Clear
 Saturday

Saturday: Sunny and hot, with a high near 96. Calm wind.
Hot
 Saturday
Night
Saturday Night: Mostly clear, with a low around 72.
Mostly Clear
 Sunday

Sunday: Mostly sunny and hot, with a high near 96.
Hot
 Sunday
Night
Sunday Night: Partly cloudy, with a low around 70.
Partly Cloudy
 Monday

Monday: Mostly sunny and hot, with a high near 94.
Hot
Hi 97 °F Lo 71 °F Hi 96 °F Lo 70 °F Hi 96 °F Lo 72 °F Hi 96 °F Lo 70 °F Hi 94 °F

Heat Advisory
 

Today
 
 Sunny and hot, with a high near 97. Heat index values as high as 100. Light and variable wind.
Tonight
 
 Mostly clear, with a low around 71. Calm wind.
Friday
 
 Sunny and hot, with a high near 96. Light and variable wind.
Friday Night
 
 Mostly clear, with a low around 70. Calm wind.
Saturday
 
 Sunny and hot, with a high near 96. Calm wind.
Saturday Night
 
 Mostly clear, with a low around 72.
Sunday
 
 Mostly sunny and hot, with a high near 96.
Sunday Night
 
 Partly cloudy, with a low around 70.
Monday
 
 Mostly sunny and hot, with a high near 94.
Monday Night
 
 A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Tuesday
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88.
Tuesday Night
 
 A 30 percent chance of showers. Partly cloudy, with a low around 66.
Wednesday
 
 A 30 percent chance of showers. Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Mammoth Cave KY.

Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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