North Cascades National Park weather in October
October in North Cascades National Park: cold, soaked, with clean air — a good time to visit.
#6 of 12 months in North Cascades National Park · #501 of 604 destinations to visit in October · comfort 63/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
North Cascades National Park climate normals — October
| Daytime high | 4°C / 39°F | 🧥 cold |
|---|---|---|
| Nighttime low | -4°C / 25°F | |
| Feels like (high) | 1°C / 34°F | |
| Rainfall | 161 mm / 6.4 in | ⛈ soaked |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | -3°C / 27°F | |
| Sunshine | 6.4 h/day | |
| Daylight | 10.8 h | |
| Wind | 7 km/h / 4 mph | |
| Snowfall | 45.3 cm / 17.8 in | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is North Cascades National Park?
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North Cascades National Park in October — FAQ
- Is October a good time to visit North Cascades National Park?
- October in North Cascades National Park: cold, soaked, with clean air — a good time to visit. It ranks #6 of 12 months for North Cascades National Park on SeasonMap's comfort score (63/100).
- What is the weather like in North Cascades National Park in October?
- In October, North Cascades National Park averages a daily high of 3.9°C and a low of -3.9°C, with about 161.3 mm of rain over roughly 14.4 rainy days.
- What is the air quality in North Cascades National Park in October?
- North Cascades National Park has a mean US Air Quality Index of about 31 in October.
- Does it snow in North Cascades National Park in October?
- North Cascades National Park sees roughly 45.3 cm of snowfall in October.