Seattle · October
Run in the morning.
Cool month: average high 60°F, low 48°F. Humidity averages 82% — the limiting factor on most runs. Expect 17 rain days — plan around the radar. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
60° / 48°F
Humidity
82%
Rain days
17/mo
Wind
11 mph
What October feels like in Seattle
Sunrise
07:30
Mid-month average
Sunset
18:19
Mid-month average
Time-of-day breakdown
Morning
Coolest, driest air of the day. The window before sunrise is the most reliable comfortable hour.
Midday
Mild but UV and traffic peak. Workable if you don't mind shifting your pace.
Evening
Warm and runnable. Crowded routes but the air's typically calm.
What to wear running in Seattle in October
The kit for October in Seattle: a long-sleeve or light jacket for the first mile, a water-resistant cap or jacket on standby.
October vs the surrounding months
vs September
-9° avg high
+4 rain days
Seattle in September →
October
60°F avg high
17 rain days
Best: morning
vs November
+9° avg high
-2 rain days
Seattle in November →
Frequently Asked Questions
What is the best time of day to run in Seattle in October?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Seattle in October?+
Average high 60°F, average low 48°F.
How does October compare to surrounding months in Seattle?+
Compared to September (avg high 69°F), October is cooler. Compared to November (avg high 50°F), October is warmer.
Does it rain often in Seattle in October?+
Expect about 17 measurable rain days in October, on average.