National Weather Service Forecast for: Mammoth Cave KY
Issued by: National Weather Service Louisville, KY
Updated: 1:50 pm CDT May 29, 2026
 
This
Afternoon
This Afternoon: A 10 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. Calm wind.
Slight Chance
T-storms

 Tonight

Tonight: Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
 Saturday

Saturday: A 30 percent chance of showers, mainly before 7am. Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Calm wind becoming northeast around 5 mph in the afternoon.
Chance
Showers and
Patchy Fog
then Partly
Sunny
 Saturday
Night
Saturday Night: Partly cloudy, with a low around 59. Light northeast wind.
Partly Cloudy


 Sunday

Sunday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 80. Light east wind. Chance of precipitation is 20%.
Mostly Sunny
then Slight
Chance
T-storms
 Sunday
Night
Sunday Night: A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Slight Chance
T-storms then
Chance
Showers
 Monday

Monday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Chance
Showers then
Chance
T-storms
 Monday
Night
Monday Night: A 20 percent chance of showers. Partly cloudy, with a low around 61.
Slight Chance
Showers

 Tuesday

Tuesday: Sunny, with a high near 80.
Sunny
Hi 83 °F Lo 66 °F Hi 80 °F Lo 59 °F Hi 80 °F Lo 63 °F Hi 81 °F Lo 61 °F Hi 80 °F

 

This Afternoon
 
 A 10 percent chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 83. Calm wind.
Tonight
 
 Showers and thunderstorms likely. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 A 30 percent chance of showers, mainly before 7am. Patchy fog before 7am. Otherwise, partly sunny, with a high near 80. Calm wind becoming northeast around 5 mph in the afternoon.
Saturday Night
 
 Partly cloudy, with a low around 59. Light northeast wind.
Sunday
 
 A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 80. Light east wind. Chance of precipitation is 20%.
Sunday Night
 
 A slight chance of thunderstorms before 7pm, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63. Chance of precipitation is 40%.
Monday
 
 A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Monday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 61.
Tuesday
 
 Sunny, with a high near 80.
Tuesday Night
 
 Clear, with a low around 56.
Wednesday
 
 Sunny, with a high near 80.
Wednesday Night
 
 Clear, with a low around 58.
Thursday
 
 Sunny, with a high near 83.
Thursday Night
 
 A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.
Friday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Mammoth Cave KY.