Castle Clinton National Monument in June
June at Castle Clinton National Monument averages a daytime high near 80°F and an overnight low around 64°F, with about 4.5" of precipitation. Visitation runs about 1.3× the park's average month, which makes June a busy month here.
- Average low
- 64°F
- Average high
- 80°F
Range across the year: 28°F to 85°F
- Precipitation
- 4.5 in
- Daylight
- 14.9 hours
Roughly 11% of the park's yearly visitors come in June: about 424,000 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
That makes June the 3rd-busiest of the park's twelve months, sitting between the July peak (1.6×) and the January low (0.5×).
On our Best Time to Visit score June rates 58/100 ("Fair"). Our recommended month is September: pleasant weather with noticeably thinner crowds (shoulder season).
The daily average of about 72°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 5.8 miles from the park.
June 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 14.9 hours of daylight in June to explore — near the year-round maximum.
Park-wide, 2025 drew 3,656,350 recreation visits, down 4.4% from 3,822,759 in 2024.
Across the past decade overall visitation has eased about 28.2%, so June may feel a touch quieter than it once did.
How June compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| May | 71°F / 55°F | 1.2× Busy | 61 Good |
| June | 80°F / 64°F | 1.3× Busy | 58 Fair |
| July | 85°F / 70°F | 1.6× Busy | 40 Poor |
All twelve months at Castle Clinton, with the best time to visit.
Frequently Asked Questions
June averages a daytime high near 80°F and an overnight low around 64°F at Castle Clinton National Monument, with about 4.5 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 5.8 miles from the park, so conditions inside the park can differ, especially at other elevations.
June is busy at Castle Clinton National Monument (about 1.3× the average month). Our best-time score rates it "Fair" at 58/100. Our recommended month is September.
The busiest month is July and the quietest is January. June sits at about 1.3× the park's average, or 11% of annual visitation.
A typical June sees about 424,000 recreation visits at Castle Clinton National Monument, based on National Park Service monthly counts from 1979–2025.
Where to stay near Castle Clinton in June
Booking a June trip to Castle Clinton National Monument? Compare hotels, cabins and vacation rentals near the park with live June availability and prices.
Top-rated places to stay near Castle Clinton
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See the full ranking of the best national parks to visit in June.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.