Monday, October 19, 2026 · Hour-by-hour forecast updated 12:15 AM PDT
62°F and clear at peak. Wind 3 mph from the NNE, dew point 40°F.
Running in San Bernardino peaks twice a year — November (FitScore 97) and April (96) — with typical morning lows of 48°F and 51°F respectively. There is no truly bad month here — even August, the weakest, averages a FitScore of 81. That makes San Bernardino one of the best year-round running cities in the country — #16 of 200, with an annual FitScore of 92 against a national median of 74.
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 5 AM–10 AM with a peak FitScore of 100/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in San Bernardino are November, April, and May, with average FitScores of 97, 96, and 95 based on a decade of daily weather history. The most challenging is August (FitScore 81).
Historically, October in San Bernardino averages a FitScore of 94/100 — excellent running weather — with highs around 84°F, lows around 57°F, dew points near 42°F, and 1.5 days of measurable rain. That's above 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.