Typical Run Score
82
Great
Seattle · January
Running in Seattle in January
Typical January running conditions in Seattle — and a live Run Score so you can see how today compares with the norm.
Avg temperature
41°F
Cold
Avg dew point
36°F
Comfortable
Best window
12–6 PM
Local time
Seattle · today vs the January normTemperature · dew point · wind · timing
How January compares in Seattle
January ranks 10th of 12 months for running in Seattle, with a typical daytime Run Score of 82 (Great). For reference, the best month is May (score 92) and the hardest is July (score 76). The kindest window in January is typically 12–6 PM. Precipitation falls in roughly 31% 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 Seattle in January: FAQ
Is it good to run in Seattle in January?
Yes — it's one of the better months to run here. The typical daytime Run Score is 82 (Great), with temperatures around 41°F (5°C) and comfortable dew points. The best window is usually 12–6 PM.
How hot is it for running in Seattle in January?
Typical temperatures average 41°F (5°C) (Cold) with dew points near 36°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.
Get this on every run, automatically
RunWeather syncs with Strava, plans your week, and learns your heat tolerance — so the right time to run finds you.