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Mammoth Cave

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Mammoth Cave Weather, Climate and Best Time to Visit

Data source：Meteostat
Update date：2025-09

Mammoth Cave year round climate

  • Spring (March–May): Average 15.5–19.6°C, mild climate with gradually increasing rainfall. March has less rainfall, while April and May see increased rainfall. Common activities: Visiting Mammoth Cave, enjoying outdoor activities. Recommended clothing: Light jacket, long-sleeved shirt.
  • Summer (June–August): Average 12.4–13.2°C, cool climate with higher rainfall, peaking in July. Common activities: Exploring Mammoth Cave, escaping the heat. Recommended clothing: Light and breathable clothing, rain gear.
  • Autumn (September–November): Average 13.8–17.2°C, mild climate with decreasing rainfall. September has higher rainfall, while October and November see less rainfall. Common activities: Visiting Mammoth Cave, outdoor walks. Recommended clothing: Comfortable long-sleeved shirts and light jackets.
  • Winter (December–February): Average 18.6–21°C, warm climate with very little rainfall. Common activities: Visiting Mammoth Cave. Recommended clothing: Light and warm clothing.

Mammoth Cave climatological average

Annual average temperature: approx. 16.5°C / Annual rainfall: approx. 651 mm / Summer humidity: 60%–70% / Rainiest month: July

Mammoth Cave monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
20.5°C
2.9
February
21°C
4.2
March
19.6°C
24
April
16.9°C
43.5
May
15.5°C
74.2
June
13.2°C
110.8
July
13.2°C
142.8
August
12.4°C
128.6
September
13.8°C
64.8
October
14.3°C
31.9
November
17.2°C
18.6
December
18.6°C
5

Mammoth Cave weather for the next seven days

12/31
Wednesday
Sunny
24.2°C/13.5°C
1/1
Thursday
Sunny
27.1°C/14.5°C
1/2
Friday
Partly Cloudy
25.5°C/17°C
1/3
Saturday
Sunny
25.5°C/17.3°C
1/4
Sunday
Sunny
25°C/14.3°C
1/5
Monday
Sunny
24.6°C/15.7°C
1/6
Tuesday
Partly Cloudy
21.6°C/16.5°C

Mammoth Cave Frequently Asked Questions and Useful Information for Travel

How long does it take to walk through Mammoth Cave?

The time it takes to walk through Mammoth Cave depends on the specific tour. Guided tours range from approximately 1.25 to 1.5 hours for the Frozen Niagara Tour, up to 4 hours for the Grand Avenue Tour, and even longer for Wild Cave Tours. There is also a self-guided tour option focusing on early cave history and artifacts.

What is so special about Mammoth Cave?

Mammoth Cave is special because it is the world's longest known cave system, with over 400 miles of mapped passageways. It is recognized as a UNESCO World Heritage Site and an International Biosphere Reserve. The park preserves this massive limestone labyrinth, which hosts diverse plant and animal life and maintains a stable year-round temperature of 54°F.

When was the last death in Mammoth Cave?

The last notable death in the vicinity of Mammoth Cave was that of cave explorer Floyd Collins, who was trapped in Sand Cave in 1925 and subsequently died there. His body was later moved from Crystal Cave to be reburied in the church cemetery.

How much does it cost to see Mammoth Cave?

While there is no entrance fee to Mammoth Cave National Park itself, tickets are required for all guided and self-guided cave tours. Ticket prices vary by tour and can range from approximately $6 to $60 for adults. Reservations are highly encouraged and can be made online.

What are the best tours at Mammoth Cave?

Mammoth Cave offers a variety of tours catering to different interests and physical abilities. Popular options include the Frozen Niagara Tour for its stunning formations, the Historic Tour to explore the cave's early history, and the challenging Grand Avenue Tour for a more extensive exploration. Wild Cave Tours are available for those seeking a more adventurous, unguided experience.