National Weather Service Forecast for: Mammoth Cave KY
Issued by: National Weather Service Louisville, KY
Updated: 2:36 am CDT Apr 7, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 41. Light northeast wind.
Partly Cloudy
 Tuesday

Tuesday: Sunny, with a high near 59. Northeast wind 6 to 10 mph.
Sunny
 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 38. Northeast wind around 6 mph becoming calm after midnight.
Mostly Clear
 Wednesday

Wednesday: Mostly sunny, with a high near 72. Light and variable wind.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.
Partly Cloudy
 Thursday

Thursday: Sunny, with a high near 74.
Sunny
 Thursday
Night
Thursday Night: Clear, with a low around 50.
Clear
 Friday

Friday: Sunny, with a high near 77.
Sunny
 Friday
Night
Friday Night: Partly cloudy, with a low around 55.
Partly Cloudy
Lo 41 °F Hi 59 °F Lo 38 °F Hi 72 °F Lo 49 °F Hi 74 °F Lo 50 °F Hi 77 °F Lo 55 °F

 

Overnight
 
 Partly cloudy, with a low around 41. Light northeast wind.
Tuesday
 
 Sunny, with a high near 59. Northeast wind 6 to 10 mph.
Tuesday Night
 
 Mostly clear, with a low around 38. Northeast wind around 6 mph becoming calm after midnight.
Wednesday
 
 Mostly sunny, with a high near 72. Light and variable wind.
Wednesday Night
 
 Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.
Thursday
 
 Sunny, with a high near 74.
Thursday Night
 
 Clear, with a low around 50.
Friday
 
 Sunny, with a high near 77.
Friday Night
 
 Partly cloudy, with a low around 55.
Saturday
 
 Mostly sunny, with a high near 81.
Saturday Night
 
 Mostly clear, with a low around 58.
Sunday
 
 Sunny, with a high near 84.
Sunday Night
 
 Mostly cloudy, with a low around 66.
Monday
 
 A 20 percent chance of showers. Partly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Mammoth Cave KY.