Typical Run Score
79
Good
Portland · January
Running in Portland in January
Typical January running conditions in Portland — and a live Run Score so you can see how today compares with the norm.
Avg temperature
40°F
Cold
Avg dew point
35°F
Comfortable
Best window
12–5 PM
Local time
Portland · today vs the January normTemperature · dew point · wind · timing
How January compares in Portland
January ranks 9th of 12 months for running in Portland, with a typical daytime Run Score of 79 (Good). For reference, the best month is May (score 91) and the hardest is August (score 70). The kindest window in January is typically 12–5 PM. Precipitation falls in roughly 35% of hours this month. Use the live tool below to see how today actually compares with the January norm.
Running weather in nearby cities
Same engine, different climate. Check the best time to run in these cities too.
Running in Portland in January: FAQ
Is it good to run in Portland in January?
Generally yes, with sensible timing. The typical daytime Run Score is 79 (Good), with temperatures around 40°F (4°C) and comfortable dew points. The best window is usually 12–5 PM.
How hot is it for running in Portland in January?
Typical temperatures average 40°F (4°C) (Cold) with dew points near 35°F. Dew point — not the thermometer — usually decides how hard the run feels.
What is a good Run Score?
Scores run 0–100. 97+ is Perfect, 80–96 is Great — conditions are actively working in your favour. 65–79 (Good) is solid. 45–64 (Mixed) means at least one factor — usually heat or dew point — is taxing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.
Why does dew point matter more than temperature?
Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.
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