National Weather Service Forecast for: Mammoth Cave KY
Issued by: National Weather Service Louisville, KY
Updated: 1:26 am CDT Jun 22, 2026
 
Today

Today: Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers after 4pm. High near 80. West wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Tonight

Tonight: A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Slight Chance
Showers then
Mostly Cloudy
 Tuesday

Tuesday: Patchy fog before 7am. Otherwise, sunny, with a high near 81. Light north wind.
Patchy Fog
then Sunny

 Tuesday
Night
Tuesday Night: Mostly clear, with a low around 60. Calm wind.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 84. Calm wind.
Sunny

 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Chance
Showers

 Thursday

Thursday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Chance
T-storms

 Thursday
Night
Thursday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Chance
T-storms

 Friday

Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Chance
T-storms then
Showers
Likely
Hi 80 °F Lo 62 °F Hi 81 °F Lo 60 °F Hi 84 °F Lo 67 °F Hi 86 °F Lo 68 °F Hi 86 °F

 

Today
 
 Showers and thunderstorms before 3pm, then showers likely and possibly a thunderstorm between 3pm and 4pm, then a chance of showers after 4pm. High near 80. West wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A 10 percent chance of showers before 7pm. Mostly cloudy, with a low around 62. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
 
 Patchy fog before 7am. Otherwise, sunny, with a high near 81. Light north wind.
Tuesday Night
 
 Mostly clear, with a low around 60. Calm wind.
Wednesday
 
 Sunny, with a high near 84. Calm wind.
Wednesday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
 
 A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 86.
Thursday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Friday
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Friday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
Saturday
 
 Showers and thunderstorms likely. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Mammoth Cave KY.