National Weather Service Forecast for: Mammoth Cave KY
Issued by: National Weather Service Louisville, KY
Updated: 6:00 am CST Dec 5, 2025
 
Today

Today: Patchy fog before 8am. Otherwise, partly sunny, with a high near 40. Calm wind.
Patchy Fog
then Partly
Sunny
 Tonight

Tonight: Mostly cloudy, with a low around 27. Calm wind.
Mostly Cloudy

 Saturday

Saturday: Partly sunny, with a high near 45. Southwest wind around 5 mph becoming calm in the afternoon.
Partly Sunny

 Saturday
Night
Saturday Night: Increasing clouds, with a low around 29. Calm wind.
Increasing
Clouds
 Sunday

Sunday: A 50 percent chance of rain. Mostly cloudy, with a high near 47. Calm wind becoming southwest around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Chance Rain

 Sunday
Night
Sunday Night: A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Chance Rain
then Chance
Rain/Snow
 Monday

Monday: Mostly sunny, with a high near 36.
Mostly Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 24.
Partly Cloudy

 Tuesday

Tuesday: Sunny, with a high near 46.
Sunny
Hi 40 °F Lo 27 °F Hi 45 °F Lo 29 °F Hi 47 °F Lo 25 °F Hi 36 °F Lo 24 °F Hi 46 °F

 

Today
 
 Patchy fog before 8am. Otherwise, partly sunny, with a high near 40. Calm wind.
Tonight
 
 Mostly cloudy, with a low around 27. Calm wind.
Saturday
 
 Partly sunny, with a high near 45. Southwest wind around 5 mph becoming calm in the afternoon.
Saturday Night
 
 Increasing clouds, with a low around 29. Calm wind.
Sunday
 
 A 50 percent chance of rain. Mostly cloudy, with a high near 47. Calm wind becoming southwest around 5 mph. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
 
 A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Monday
 
 Mostly sunny, with a high near 36.
Monday Night
 
 Partly cloudy, with a low around 24.
Tuesday
 
 Sunny, with a high near 46.
Tuesday Night
 
 Mostly cloudy, with a low around 34.
Wednesday
 
 A 30 percent chance of rain. Mostly cloudy, with a high near 50.
Wednesday Night
 
 A chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Thursday
 
 A slight chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 20%.

 

Forecast from NOAA-NWS for Mammoth Cave KY.