Tuesday, July 21, 2026 · Hour-by-hour forecast updated 7:24 AM MDT
67°F and clear at peak. Wind 4 mph from the SSW, dew point 54°F.
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 89/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Denver are April, May, September, October. The most challenging months are typically December, January. Altitude means stronger UV — wear sunscreen even when it's cool. Afternoon thunderstorms are common June–August.
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.