North Cascades National Park in August
In August, North Cascades National Park averages a high of 79°F and a low of 54°F, with 1.7 inches of precipitation (rain plus melted snow). About 8,700 people visit, the 2nd busiest of 12 (busy). Days are 14 hours 22 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 79° / 54°F
- Precipitation
- 1.7in
- Snow
- 0in
- Daylight
- 14h 22m
- Visitors
- 8,700
- Crowds
- Busy
Best months for weather and crowds instead: May (quiet), June (quiet) and September (busy).
Weather 1991–2020 averages at Newhalem, WA, 11.6 miles from the park's center, 525 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in August
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Ross Lake National Recreation Area | 79° / 56° | Moderate | Mild |
| Olympic National Park | 75° / 52° | Very busy | Mild |
| Mount Rainier National Park | 64° / 45° | Very busy | Mild |
| Lake Roosevelt National Recreation Area | 83° / 48° | Very busy | Hot |
| Fort Vancouver National Historic Site | 82° / 57° | Busy | Hot |
Closures, reservations and alerts: North Cascades National Park on nps.gov
All twelve months at North Cascades · National parks to visit in August