Mammoth Cave National Park in July
July at Mammoth Cave National Park averages a daytime high near 91°F and an overnight low around 68°F, with about 4.9" of precipitation. Visitation runs about 2× the park's average month, which makes July a very busy month here.
- Average low
- 68°F
- Average high
- 91°F
Range across the year: 29°F to 91°F
- Precipitation
- 4.9 in
- Daylight
- 14.3 hours
Roughly 17% of the park's yearly visitors come in July: about 98,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
It is the single busiest month of the year at Mammoth Cave; January, the quietest, runs only about 0.3× the average — a 8-to-1 swing between high and low season.
On our Best Time to Visit score July rates 23/100 ("Poor"). Our recommended month is September: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 80°F is hot, with afternoons near 91°F to plan the day around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 4.7 miles from the park.
July falls inside the park's busiest stretch: June, July and August together pull about 42% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 14.3 hours of daylight in July to explore — near the year-round maximum.
Park-wide, 2025 drew 660,734 recreation visits, down 11.6% from 747,042 in 2024.
Across the past decade overall visitation has risen about 27.1%, so a July visit is likely to feel busier than it did a few years ago.
How July compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| June | 88°F / 64°F | 1.6× Busy | 44 Poor |
| July | 91°F / 68°F | 2.0× Very busy | 23 Poor |
| August | 90°F / 67°F | 1.4× Busy | 41 Poor |
All twelve months at Mammoth Cave, with the best time to visit.
Things to do at Mammoth Cave in July
The National Park Service tags 17 Mammoth Cave activities for summer. Here are 8 of them. Each links to the park's own page for it.
- Dennison Ferry to Green River Ferry · 150-240 minutes
- Green River Ferry to Houchin Ferry · 4-6 hours
- Houchin Ferry to Brownsville · 90-120 minutes
- Nolin River Dam to Houchin Ferry · 4-6 hours
- Planning Your River Trip
- River Safety and Regulations
- Explore Wildflowers at Cedar Sink · 45-60 minutes
- Attend a Ranger-led Program · 10-60 minutes
Frequently Asked Questions
July averages a daytime high near 91°F and an overnight low around 68°F at Mammoth Cave National Park, with about 4.9 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 4.7 miles from the park, so conditions inside the park can differ, especially at other elevations.
July is very busy at Mammoth Cave National Park (about 2.0× the average month). Our best-time score rates it "Poor" at 23/100. Our recommended month is September.
The busiest month is July and the quietest is January. July sits at about 2.0× the park's average, or 17% of annual visitation.
A typical July sees about 98,000 recreation visits at Mammoth Cave National Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Mammoth Cave in July
Booking a July trip to Mammoth Cave National Park? Compare hotels, cabins and vacation rentals near the park with live July availability and prices.
Top-rated places to stay near Mammoth Cave
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Visiting Mammoth Cave in July?
Get crowd forecasts and lodging deals for Mammoth Cave by email. No spam, unsubscribe anytime.
See the full ranking of the best national parks to visit in July.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.