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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: 2:15 pm CDT Sep 25, 2026
 
Tonight

Tonight: Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Partly Cloudy

 Saturday

Saturday: Mostly sunny, with a high near 75. Calm wind becoming east around 5 mph in the morning.
Mostly Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 50. Calm wind.
Partly Cloudy

 Sunday

Sunday: Sunny, with a high near 75. Light northeast wind.
Sunny

 Sunday
Night
Sunday Night: Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 48. Calm wind.
Mostly Clear
then Patchy
Fog
 Monday

Monday: Patchy fog before 7am. Otherwise, sunny, with a high near 75.
Patchy Fog
then Sunny
 Monday
Night
Monday Night: Clear, with a low around 51.
Clear

 Tuesday

Tuesday: Sunny, with a high near 79.
Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 59.
Mostly Clear
Lo 54 °F Hi 75 °F Lo 50 °F Hi 75 °F Lo 48 °F Hi 75 °F Lo 51 °F Hi 79 °F Lo 59 °F

 

Tonight
 
 Partly cloudy, with a low around 54. Northeast wind around 5 mph becoming calm in the evening.
Saturday
 
 Mostly sunny, with a high near 75. Calm wind becoming east around 5 mph in the morning.
Saturday Night
 
 Partly cloudy, with a low around 50. Calm wind.
Sunday
 
 Sunny, with a high near 75. Light northeast wind.
Sunday Night
 
 Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly clear, with a low around 48. Calm wind.
Monday
 
 Patchy fog before 7am. Otherwise, sunny, with a high near 75.
Monday Night
 
 Clear, with a low around 51.
Tuesday
 
 Sunny, with a high near 79.
Tuesday Night
 
 Mostly clear, with a low around 59.
Wednesday
 
 Mostly sunny, with a high near 84.
Wednesday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 66.
Thursday
 
 A 40 percent chance of showers. Partly sunny, with a high near 82.
Thursday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 65.
Friday
 
 A 40 percent chance of showers. Partly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Mammoth Cave KY.

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






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