Search flights, hotels & activities for Denver
Compare flights, hotels, cars, and activities in one place.
500+airlines & travel sites compared
21,000+routes tracked
€0booking fees from us
Freeprice drop alerts
Things to Do in Denver in September
Real historical weather for Denver in September: average highs of 28°C and lows of 12°C, with around 38mm of rain (averaged over the last 3 years). Denver is in United States.
28°C
Average high
12°C
Average low
38mm
Typical rainfall
Real things to do in Denver in September
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Ad
Red Rocks Express Tour from Denver: Views and Photo Opportunities
★ 5.0(16 reviews)· 1h 45m
From €44
Small Group Tour of Pikes Peak and the Garden of the Gods from Denver
★ 4.9(3,251 reviews)· 8 hrs
From €169
Rocky Mountain National Park Guided Hiking Adventure
★ 4.9(664 reviews)· 8 hrs
From €192
Pikes Peak and Garden of the Gods Tour from Denver
★ 4.9(204 reviews)· 8h 30m
From €169
Shared Half-Day Mountain Tour in Red Rocks Evergreen and Echo Lake
★ 4.9(880 reviews)· 5 hrs
From €88
Best of Denver Bus Tour: Highlights, Views & Local Favorites
★ 4.9(503 reviews)· 1h 45m
From €35
Red Rocks & Beyond
★ 4.8(1,682 reviews)· 4 hrs
From €90
BEYOND Light Show & Meditation
★ 4.8(1,003 reviews)· 1 hr
From €22
Pikes Peak COG Railway & Garden of Gods Tour
★ 4.8(424 reviews)· 9 hrs
From €222
Van Gogh: The Immersive Experience Ticket Denver
★ 4.6(5 reviews)· 1h 30m
From €29
Real listings from Viator, including live ratings and prices — clicking through takes you to book directly.
Plan the rest of your trip
Continue planning your trip to Denver
Same destination, real availability — no need to search again.
FAQs — Denver in September
Based on real historical data (averaged over the last 3 years), expect highs around 28°C and lows around 12°C, with roughly 38mm of rain.