Quick Answer: Running in Denver
Running in Denver: A Seasonal Guide
Denver's semi-arid climate shapes the running experience across all four seasons. Warm summers and the transition seasons define the running calendar. Humidity can be the hidden factor that makes or breaks a run here.
Peak season (May and June): Mild temperatures and lower humidity create conditions most runners dream about. You can comfortably run at almost any time of day.
Off-season strategy: In summer, morning runs before 8 AM avoid the worst heat. In winter, midday runs let you catch the warmest hours.
Local runners know that 300+ days of sunshine means year-round running. Also worth noting: afternoon thunderstorms common in summer.
Best Months to Run
May, June, September, October offer the most comfortable running conditions in Denver. During these months, you'll find mild temperatures and manageable weather patterns perfect for outdoor running.
Seasonal Running Temperatures
Temperature Range by Season
Low: 22°F
High: 45°F
Low: 35°F
High: 62°F
Low: 58°F
High: 88°F
Low: 38°F
High: 67°F
Running Weather Tips for Denver
Altitude (5,280 ft) affects performance - start slow
300+ days of sunshine means year-round running
Afternoon thunderstorms common in summer
Low humidity makes heat more tolerable
Popular Running Routes in Denver
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What weather challenges do runners face in Denver?+
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