Monday, October 19, 2026 · Hour-by-hour forecast updated 3:16 AM EDT
60°F and clear at peak. Wind 7 mph from the NNE, dew point 43°F.
Running in Philadelphia peaks twice a year — April (FitScore 86) and October (86) — with typical morning lows of 44°F and 51°F respectively. July is the toughest month: sticky dew points averaging 66°F alongside highs of 87°F drag the average FitScore down to 60 — plan on pre-dawn starts. Across the full year, Philadelphia ranks #105 of 200 U.S. running cities, with an annual FitScore of 74 (national median: 74). 8 months of the year score 70 or better.
Based on 2015–2024 daily weather history (Open-Meteo ERA5), scored against 200 U.S. cities. Monthly FitScore reflects each day’s best running window.
FitCast texts you tomorrow's hour-by-hour forecast every evening so you know exactly what to expect before your alarm goes off.
Based on today's FitScore analysis, the best time to run is All day with a peak FitScore of 98/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Philadelphia are April, October, and May, with average FitScores of 86, 86, and 84 based on a decade of daily weather history. The most challenging is July (FitScore 60). Schuylkill River Trail is exposed — early morning runs avoid both heat and crowds.
Historically, October in Philadelphia averages a FitScore of 86/100 — excellent running weather — with highs around 68°F, lows around 51°F, dew points near 49°F, and 6.4 days of measurable rain. That's about even with the national median of 86 for October.
FitScore rates each hour from 0–100 for outdoor exercise based on temperature, humidity, dew point, wind, precipitation probability, UV index, and air quality. Higher scores mean better conditions.