Delaware Water Gap National Recreation Area in September
In September, Delaware Water Gap National Recreation Area averages a high of 74°F and a low of 52°F, with 4.3 inches of precipitation (rain plus melted snow). About 506,000 people visit, the 3rd busiest of 12 (very busy). Days are 12 hours 25 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 74° / 52°F
- Precipitation
- 4.3in
- Snow
- –in
- Daylight
- 12h 25m
- Visitors
- 506,000
- Crowds
- Very busy
Best months for weather and crowds instead: April (moderate) and May (busy).
Weather 1991–2020 averages at Andover Aeroflex AP, NJ, 12.3 miles from the park's center, 583 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in September
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Statue of Liberty National Monument | 76° / 62° | Moderate | Mild, wet |
| Stonewall National Monument | 76° / 62° | Few or no visits | Mild, wet |
| Castle Clinton National Monument | 76° / 62° | Busy | Mild, wet |
| Gateway National Recreation Area | 76° / 61° | Busy | Mild |
| Valley Forge National Historical Park | 79° / 56° | Busy | Mild, wet |
Closures, reservations and alerts: Delaware Water Gap National Recreation Area on nps.gov
All twelve months at Delaware Water Gap National Recreation Area · National parks to visit in September