Tuesday, July 21, 2026 · Hour-by-hour forecast updated 8:26 AM CDT
81°F and overcast at peak. Wind 9 mph from the SW, dew point 72°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 8 AM with a peak FitScore of 44/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Knoxville are March, April, October, November. The most challenging months are typically July, August. Dew points routinely exceed 70°F in summer. Run before 8 AM or wait for evening cooldown.
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.