Portland · October
Run in the morning.
Cool month: average high 63°F, low 48°F. Humidity averages 79% — the limiting factor on most runs. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
Avg high / low
63° / 48°F
Humidity
79%
Rain days
15/mo
Wind
10 mph
What October feels like in Portland
Sunrise
07:29
Mid-month average
Sunset
18:23
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 Portland in October
The kit for October in Portland: 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
-12° avg high
+5 rain days
Portland in September →
October
63°F avg high
15 rain days
Best: morning
vs November
+12° avg high
-4 rain days
Portland in November →
Frequently Asked Questions
What is the best time of day to run in Portland in October?+
Morning. Cool, runnable conditions throughout — morning still has the steadiest air and lightest wind.
What's the average temperature in Portland in October?+
Average high 63°F, average low 48°F.
How does October compare to surrounding months in Portland?+
Compared to September (avg high 75°F), October is cooler. Compared to November (avg high 52°F), October is warmer.
Does it rain often in Portland in October?+
Expect about 15 measurable rain days in October, on average.