Monday, October 19, 2026 · Hour-by-hour forecast updated 12:11 AM MST
63°F and overcast at peak. Wind 2 mph from the NE, dew point 48°F.
Running in Tempe peaks twice a year — April (FitScore 98) and November (98) — with typical morning lows of 59°F and 52°F respectively. August brings dry heat — average highs of 104°F with dew points only around 58°F — holding the month to a FitScore of 54 outside the early-morning window. Across the full year, Tempe ranks #56 of 200 U.S. running cities, with an annual FitScore of 86 (national median: 74). Conditions stay runnable nearly year-round, with 10 months scoring 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 5 AM–9 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 Tempe are April, November, and March, with average FitScores of 98, 98, and 97 based on a decade of daily weather history. The most challenging is August (FitScore 54).
Historically, October in Tempe averages a FitScore of 94/100 — excellent running weather — with highs around 89°F, lows around 64°F, dew points near 40°F, and 1.8 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.