Frederick Law Olmsted National Historic Site in April
April at Frederick Law Olmsted National Historic Site averages a daytime high near 59°F and an overnight low around 38°F, with about 4.3" of precipitation. Visitation runs about 0.9× the park's average month, which makes April an average month here.
- Average low
- 38°F
- Average high
- 59°F
Range across the year: 19°F to 85°F
- Precipitation
- 4.3 in
- Daylight
- 13.2 hours
Roughly 7% of the park's yearly visitors come in April: about 660 recreation visits in a typical year, based on National Park Service monthly counts from 1981 to 2025.
That makes April the 7th-busiest of the park's twelve months, sitting between the July peak (1.8×) and the January low (0.2×).
On our Best Time to Visit score April rates 50/100 ("Fair"). Our recommended month is May: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 49°F is cool, so layers and a shorter daylight window matter. These figures are 1991–2020 NOAA climate normals from the nearest station, about 1.5 miles from the park.
Because June, July and August together draw about 39% of annual visitors, choosing April instead steps outside that summer crush — the single biggest lever on how crowded the park feels.
You'll have about 13.2 hours of daylight in April to explore — between the 8.9-hour midwinter low and the 15.1-hour summer high.
Park-wide, 2025 drew 7,240 recreation visits, down 45.2% from 13,218 in 2024.
Across the past decade overall visitation has risen about 25.3%, so a April visit is likely to feel busier than it did a few years ago.
How April compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| March | 47°F / 28°F | 0.6× Quiet | 41 Poor |
| April | 59°F / 38°F | 0.9× Average | 50 Fair |
| May | 69°F / 48°F | 0.9× Average | 63 Good |
All twelve months at Frederick Law Olmsted, with the best time to visit.
Frequently Asked Questions
April averages a daytime high near 59°F and an overnight low around 38°F at Frederick Law Olmsted National Historic Site, with about 4.3 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 1.5 miles from the park, so conditions inside the park can differ, especially at other elevations.
April is average at Frederick Law Olmsted National Historic Site (about 0.9× the average month). Our best-time score rates it "Fair" at 50/100. Our recommended month is May.
The busiest month is July and the quietest is January. April sits at about 0.9× the park's average, or 7% of annual visitation.
A typical April sees about 1,000 recreation visits at Frederick Law Olmsted National Historic Site, based on National Park Service monthly counts from 1981–2025.
Where to stay near Frederick Law Olmsted in April
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See the full ranking of the best national parks to visit in April.
Source: National Park Service Visitor Use Statistics (1981–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.