How Crowded Is Lowell National Historical Park in July?

July runs about 4.8× Lowell National Historical Park's average month, which makes it a very busy month here — roughly 40% of the park's yearly visitors come in July.

In a typical July the park sees about 156,000 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

It is the single busiest month of the year at Lowell; December, the quietest, runs only about 0.3× the average — a 19-to-1 swing between high and low season.

On our Best Time to Visit score July rates 47/100 ("Fair"), versus the top-rated September at 81/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical July weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 85°F and an overnight low around 61°F, with about 3.9" of precipitation.

That average of about 73°F is a comfortable range for hiking and being outdoors all day.

July falls inside the park's busiest stretch: June, July and August together pull about 60% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.

You'll have about 14.8 hours of daylight in July to explore — near the year-round maximum.

Park-wide, 2024 drew 264,456 recreation visits, up 3.2% from 256,303 in 2023.

Across the past decade overall visitation has eased about 52.5%, so July may feel a touch quieter than it once did.