Tuesday, July 21, 2026 · Hour-by-hour forecast updated 9:23 AM EDT
73°F and overcast at peak. Wind 6 mph from the S, dew point 70°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 6 AM with a peak FitScore of 60/100. Check the hourly breakdown above for detailed conditions throughout the day.
The best months for running in Washington are April, May, October, November. The most challenging months are typically July, August. The Mall and Rock Creek Park offer shade but humidity is oppressive by 9 AM.
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.