Catoctin Mountain Park in September
September at Catoctin Mountain Park averages a daytime high near 75°F and an overnight low around 58°F, with about 5.3" of precipitation. Visitation runs about 1.3× the park's average month, which makes September a busy month here.
- Average low
- 58°F
- Average high
- 75°F
Range across the year: 23°F to 84°F
- Precipitation
- 5.3 in
- Daylight
- 12.2 hours
Roughly 11% of the park's yearly visitors come in September: about 42,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 3rd-busiest of the park's twelve months, sitting between the October peak (1.4×) and the February low (0.5×).
On our Best Time to Visit score September rates 48/100 ("Fair"). Our recommended month is May: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 66°F is a comfortable range for hiking and being outdoors all day. These figures are 1991–2020 NOAA climate normals from the nearest station, about 1.1 miles from the park.
Because June, July and August together draw about 31% of annual visitors, choosing September instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 12.2 hours of daylight in September to explore — between the 9.2-hour midwinter low and the 14.8-hour summer high.
Park-wide, 2025 drew 460,857 recreation visits, up 21.1% from 380,681 in 2024.
Across the past decade overall visitation has risen about 40.8%, so a September visit is likely to feel busier than it did a few years ago.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 81°F / 63°F | 1.2× Busy | 57 Fair |
| September | 75°F / 58°F | 1.3× Busy | 48 Fair |
| October | 65°F / 46°F | 1.4× Busy | 31 Poor |
All twelve months at Catoctin Mountain, with the best time to visit.
Things to do at Catoctin Mountain in September
The National Park Service tags 21 Catoctin Mountain activities for fall. Here are 8 of them. Each links to the park's own page for it.
- 8-Mile Loop Trail · 4-6 hours
- Cabin Camping · reservation required
- Hike to Chimney Rock: The Orange Blazed Trail · 2-4 hours
- Horse Riding
- Orienteering
- Picnic Areas
- Rock Climbing
- Spicebush Trail · 10-15 minutes
Frequently Asked Questions
September averages a daytime high near 75°F and an overnight low around 58°F at Catoctin Mountain Park, with about 5.3 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 1.1 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is busy at Catoctin Mountain Park (about 1.3× the average month). Our best-time score rates it "Fair" at 48/100. Our recommended month is May.
The busiest month is October and the quietest is February. September sits at about 1.3× the park's average, or 11% of annual visitation.
A typical September sees about 42,000 recreation visits at Catoctin Mountain Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Catoctin Mountain in September
Booking a September trip to Catoctin Mountain Park? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near Catoctin Mountain
Prices for Oct 30–Nov 1, 4 adults. Change dates on the map below.
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See the full ranking of the best national parks to visit in September.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.