John Muir National Historic Site in September
September at John Muir National Historic Site averages a daytime high near 84°F and an overnight low around 50°F, with about 0.1" of precipitation. Visitation runs about 0.9× the park's average month, which makes September an average month here.
- Average low
- 50°F
- Average high
- 84°F
Range across the year: 35°F to 88°F
- Precipitation
- 0.1 in
- Daylight
- 12.2 hours
Roughly 7% of the park's yearly visitors come in September: roughly 3,100 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes September the 10th-busiest of the park's twelve months, sitting between the April peak (1.6×) and the December low (0.7×).
September is our recommended month at John Muir: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 67°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 2.3 miles from the park.
Because June, July and August together draw about 27% 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 9.4-hour midwinter low and the 14.6-hour summer high.
Park-wide, 2025 drew 38,384 recreation visits, down 16.1% from 45,753 in 2024.
How September compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| August | 87°F / 51°F | 0.9× Average | 80 Excellent |
| September | 84°F / 50°F | 0.9× Average | 85 Excellent |
| October | 76°F / 46°F | 0.9× Average | 73 Good |
All twelve months at John Muir, with the best time to visit.
Things to do at John Muir in September
The National Park Service tags 3 John Muir activities for fall. Each links to the park's own page for it.
- Mount Wanda Hiking Trail · 1-2 hours
- Strentzel/Muir Gravesite Tour · 30-30 minutes · reservation required
- Visit the Strentzel/Muir Home · 1-1 hours
Frequently Asked Questions
September averages a daytime high near 84°F and an overnight low around 50°F at John Muir National Historic Site, with about 0.1 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 2.3 miles from the park, so conditions inside the park can differ, especially at other elevations.
September is average at John Muir National Historic Site (about 0.9× the average month). Our best-time score rates it "Excellent" at 85/100. September is our recommended month for this park.
The busiest month is April and the quietest is December. September sits at about 0.9× the park's average, or 7% of annual visitation.
A typical September sees about 3,000 recreation visits at John Muir National Historic Site, based on National Park Service monthly counts from 1979–2025.
Where to stay near John Muir in September
Booking a September trip to John Muir National Historic Site? Compare hotels, cabins and vacation rentals near the park with live September availability and prices.
Top-rated places to stay near John Muir
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 John Muir in September?
Get crowd forecasts and lodging deals for John Muir by email. No spam, unsubscribe anytime.
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.