Weather in Mammoth Cave, KY
Updated 2026-09-26 10:15 local time · ZIP codes 42259
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
64°9% rain
68°3% rain71°10% rain
72°6% rain74°3% rain75°8% rain74°4% rain
73°1% rain70°2% rain
64°9% rain
63°4% rain
61°11% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 11%).
It feels like 57°F with winds near 9 mph.
70°F, 2% rain chance and 5 mph wind.
Visibility is around 6 mi; gusts may reach 14 mph.
Current temperature is 64°F, wind 9 mph, rain chance up to 11%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Mammoth Cave
Kentucky has a humid climate with hot summers, generally cool winters and frequent rainfall. Thunderstorms and rapid frontal changes are common.
Mammoth Cave is part of the South weather region. The forecast point is near 37.19°N latitude and 86.10°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Mammoth Cave weather today
Overcast and 64°F in Mammoth Cave, KY. Today's high is 75°F with a 5% rain chance. Winds are around 9 mph with gusts near 14 mph. Relative humidity is 42%, pressure is 30.13 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Mammoth Cave
Sunrise is at 06:35 AM and sunset is at 06:35 PM. Tomorrow's forecast calls for Overcast with a high near 74°F and a low near 50°F. The maximum rain chance is 6%.