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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: 9:31 am CDT Aug 5, 2026
 
Today

Today: A 20 percent chance of showers and thunderstorms, mainly between 3pm and 4pm.  Mostly sunny, with a high near 89. Calm wind.
Slight Chance
T-storms

Tonight

Tonight: Patchy fog after 4am.  Otherwise, mostly clear, with a low around 70. Calm wind.
Mostly Clear
then Patchy
Fog
Thursday

Thursday: Patchy fog before 7am.  Otherwise, increasing clouds, with a high near 90. Light and variable wind.
Patchy Fog
then Partly
Sunny
Thursday
Night
Thursday Night: A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 73. Calm wind.  Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
Friday

Friday: A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the morning.  Chance of precipitation is 40%.
Slight Chance
T-storms then
Chance
T-storms
Friday
Night
Friday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 71. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Slight Chance
T-storms then
Chance
T-storms
Saturday

Saturday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 89.
Chance
T-storms

Saturday
Night
Saturday Night: Partly cloudy, with a low around 70.
Partly Cloudy

Sunday

Sunday: Mostly sunny, with a high near 91.
Mostly Sunny

Hi 89 °F Lo 70 °F Hi 90 °F Lo 73 °F Hi 91 °F Lo 71 °F Hi 89 °F Lo 70 °F Hi 91 °F

 

Today
 
A 20 percent chance of showers and thunderstorms, mainly between 3pm and 4pm. Mostly sunny, with a high near 89. Calm wind.
Tonight
 
Patchy fog after 4am. Otherwise, mostly clear, with a low around 70. Calm wind.
Thursday
 
Patchy fog before 7am. Otherwise, increasing clouds, with a high near 90. Light and variable wind.
Thursday Night
 
A chance of showers between 1am and 4am, then a chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%.
Friday
 
A slight chance of thunderstorms before 7am, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. Calm wind becoming southwest around 5 mph in the morning. Chance of precipitation is 40%.
Friday Night
 
A 50 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 71. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Saturday Night
 
Partly cloudy, with a low around 70.
Sunday
 
Mostly sunny, with a high near 91.
Sunday Night
 
Mostly clear, with a low around 72.
Monday
 
Sunny, with a high near 92.
Monday Night
 
A 20 percent chance of showers. Partly cloudy, with a low around 74.
Tuesday
 
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Mammoth Cave KY.

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






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