Thomas Edison National Historical Park in August
August at Thomas Edison National Historical Park averages a daytime high near 84°F and an overnight low around 63°F, with about 4.5" of precipitation. Visitation runs about 1.6× the park's average month, which makes August a busy month here.
- Average low
- 63°F
- Average high
- 84°F
Range across the year: 21°F to 86°F
- Precipitation
- 4.5 in
- Daylight
- 13.6 hours
Roughly 13% of the park's yearly visitors come in August: roughly 6,400 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 Thomas Edison; January, the quietest, runs only about 0.6× the average — a 3-to-1 swing between high and low season.
On our Best Time to Visit score August rates 43/100 ("Poor"). Our recommended month is September: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 73°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 4.1 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 37% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.6 hours of daylight in August to explore — between the 9.1-hour midwinter low and the 14.9-hour summer high.
Park-wide, 2021 drew 14,807 recreation visits, down 64.9% from 42,224 in 2019.
Across the past decade overall visitation has eased about 15.6%, so August may feel a touch quieter than it once did.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 86°F / 64°F | 1.5× Busy | 46 Fair |
| August | 84°F / 63°F | 1.6× Busy | 43 Poor |
| September | 78°F / 54°F | 0.8× Quiet | 75 Excellent |
All twelve months at Thomas Edison, with the best time to visit.
Frequently Asked Questions
August averages a daytime high near 84°F and an overnight low around 63°F at Thomas Edison National Historical Park, with about 4.5 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 4.1 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is busy at Thomas Edison National Historical Park (about 1.6× the average month). Our best-time score rates it "Poor" at 43/100. Our recommended month is September.
The busiest month is August and the quietest is January. August sits at about 1.6× the park's average, or 13% of annual visitation.
A typical August sees about 6,000 recreation visits at Thomas Edison National Historical Park, based on National Park Service monthly counts from 1979–2025.
Where to stay near Thomas Edison in August
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.