Denver Weather in September
25.7°C high · 8.9°C low · 35 mm rain · 8.3h sun
Yes — Sep is one of the best months to visit Denver, with mild weather and 8.3h of daily sunshine.
September at a glance
| Metric | Value |
|---|---|
| Average high | 25.7°C |
| Average low | 8.9°C |
| Rainfall | 35 mm |
| Sunshine | 8.3 hours/day |
| Daylight | 12.2 hours |
What to pack in September
Pack comfortable clothes with a light layer for evenings for Denver in September.
Denver weather by month
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Frequently asked questions
What is the weather in Denver in September?
Highs of 25.7°C and lows of 8.9°C, with about 35 mm of rain and 8.3 hours of sunshine per day.
Is September a good time to visit Denver?
Yes — Sep is one of the best months to visit Denver, with mild weather and 8.3h of daily sunshine.
What to do in Denver · Best time to visit Denver
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.