Typical Run Score
67
Good
Boston · January
Running in Boston in January
Typical January running conditions in Boston — and a live Run Score so you can see how today compares with the norm.
Avg temperature
31°F
Cold
Avg dew point
22°F
Comfortable
Best window
9 AM–10 PM
Local time
Boston · today vs the January normTemperature · dew point · wind · timing
How January compares in Boston
January ranks 11th of 12 months for running in Boston, with a typical daytime Run Score of 67 (Good). For reference, the best month is October (score 91) and the hardest is July (score 63). The kindest window in January is typically 9 AM–10 PM. Precipitation falls in roughly 21% 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 Boston in January: FAQ
Is it good to run in Boston in January?
Generally yes, with sensible timing. The typical daytime Run Score is 67 (Good), with temperatures around 31°F (-1°C) and comfortable dew points. The best window is usually 9 AM–10 PM.
How hot is it for running in Boston in January?
Typical temperatures average 31°F (-1°C) (Cold) with dew points near 22°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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