Antietam National Battlefield in July
July at Antietam National Battlefield averages a daytime high near 86°F and an overnight low around 62°F, with about 4.3" of precipitation. Visitation runs about 2× the park's average month, which makes July a very busy month here.
- Average low
- 62°F
- Average high
- 86°F
Range across the year: 21°F to 86°F
- Precipitation
- 4.3 in
- Daylight
- 14.5 hours
Roughly 17% of the park's yearly visitors come in July: about 39,000 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 Antietam; January, the quietest, runs only about 0.2× the average — a 9-to-1 swing between high and low season.
On our Best Time to Visit score July rates 42/100 ("Poor"). Our recommended month is September: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 74°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 4.9 miles from the park.
July falls inside the park's busiest stretch: June, July and August together pull about 39% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 14.5 hours of daylight in July to explore — between the 9.2-hour midwinter low and the 14.8-hour summer high.
Park-wide, 2024 drew 197,340 recreation visits, up 28.5% from 153,560 in 2023.
Across the past decade overall visitation has eased about 60.5%, so July may feel a touch quieter than it once did.
How July compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| June | 82°F / 58°F | 1.4× Busy | 63 Good |
| July | 86°F / 62°F | 2.0× Very busy | 42 Poor |
| August | 85°F / 61°F | 1.3× Busy | 61 Good |
All twelve months at Antietam, with the best time to visit.
Things to do at Antietam in July
The National Park Service tags 4 Antietam activities for summer. Each links to the park's own page for it.
- Take a short hike on the Tidball Trail · 20-60 minutes
- Take a Short Walk on the Antietam Remembered Trail · 10-45 minutes
- The Union Advance Trail at Antietam · 30-90 minutes
- Visit Antietam National Battlefield Visitor Center · 20 minutes
Frequently Asked Questions
July averages a daytime high near 86°F and an overnight low around 62°F at Antietam National Battlefield, with about 4.3 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 4.9 miles from the park, so conditions inside the park can differ, especially at other elevations.
July is very busy at Antietam National Battlefield (about 2.0× the average month). Our best-time score rates it "Poor" at 42/100. 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 39,000 recreation visits at Antietam National Battlefield, based on National Park Service monthly counts from 1979–2025.
Where to stay near Antietam in July
Booking a July trip to Antietam National Battlefield? Compare hotels, cabins and vacation rentals near the park with live July availability and prices.
Top-rated places to stay near Antietam
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 July.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.