Denver · August
Run in the morning.
Average high is 86°F with a 58°F overnight low. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
Avg high / low
86° / 58°F
Humidity
48%
Rain days
11/mo
Wind
11 mph
What August feels like in Denver
Sunrise
06:13
Mid-month average
Sunset
19:54
Mid-month average
Time-of-day breakdown
Morning
Steady cool air, low wind, and good light. The standard runner window in most months.
Midday
Heat peaks here. Skip unless you've got shade and pace tolerance.
Evening
Cools off after sunset but still warm. Good for easy efforts; avoid hard intervals if you're chasing pace.
What to wear running in Denver in August
The kit for August in Denver: light, breathable, and moisture-wicking — singlet or short-sleeve only.
August vs the surrounding months
vs July
-2° avg high
-2 rain days
Denver in July →
August
86°F avg high
11 rain days
Best: morning
vs September
+5° avg high
+3 rain days
Denver in September →
Frequently Asked Questions
What is the best time of day to run in Denver in August?+
Morning. Dry heat climbs fast after sunrise — get out in the cooler morning hours.
What's the average temperature in Denver in August?+
Average high 86°F, average low 58°F.
How does August compare to surrounding months in Denver?+
Compared to July (avg high 88°F), August is cooler. Compared to September (avg high 81°F), August is warmer.
Does it rain often in Denver in August?+
Expect about 11 measurable rain days in August, on average.