Olympic National Park weather in October
October in Olympic National Park: cold, soaked, with clean air — a good time to visit.
#7 of 12 months in Olympic National Park · #487 of 604 destinations to visit in October · comfort 64/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Olympic National Park climate normals — October
| Daytime high | 10°C / 49°F | 🧥 cold |
|---|---|---|
| Nighttime low | 2°C / 35°F | |
| Feels like (high) | 7°C / 45°F | |
| Rainfall | 243 mm / 9.6 in | ⛈ soaked |
| Rainy days | 14 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 2°C / 36°F | |
| Sunshine | 7.1 h/day | |
| Daylight | 10.8 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 8.3 cm / 3.3 in | |
| Air quality (US AQI) | 29 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Olympic National Park?
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Olympic National Park in October — FAQ
- Is October a good time to visit Olympic National Park?
- October in Olympic National Park: cold, soaked, with clean air — a good time to visit. It ranks #7 of 12 months for Olympic National Park on SeasonMap's comfort score (64/100).
- What is the weather like in Olympic National Park in October?
- In October, Olympic National Park averages a daily high of 9.5°C and a low of 1.6°C, with about 243.2 mm of rain over roughly 14.2 rainy days.
- What is the air quality in Olympic National Park in October?
- Olympic National Park has a mean US Air Quality Index of about 29 in October.
- Does it snow in Olympic National Park in October?
- Olympic National Park sees roughly 8.3 cm of snowfall in October.