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Best time to visit Denver: month by month
Short answer
June to September is best for the mountains, with Denver highs of 28–32°C and cooler air in the national park; September adds golden aspens and fewer crowds. Winter is sunny in the city at 5–9°C with snow that melts quickly, and ski season in the mountains. Spring is changeable, with snow possible into May.
Month by month
| Month | High | Low | Rainy days | Crowds |
|---|---|---|---|---|
| Jan | 5°C | -9°C | 5 | medium |
| Feb | 6°C | -11°C | 5 | medium |
| Mar | 11°C | -5°C | 9 | medium |
| Apr | 17°C | 0°C | 7 | low |
| May | 22°C | 6°C | 12 | medium |
| Jun | 28°C | 12°C | 9 | high |
| Jul | 32°C | 16°C | 7 | very high |
| Aug | 31°C | 15°C | 7 | high |
| Sep | 29°C | 11°C | 6 | high |
| Oct | 20°C | 4°C | 4 | medium |
| Nov | 13°C | -2°C | 4 | low |
| Dec | 9°C | -5°C | 4 | medium |
Temperatures and rainy days: Copernicus ERA5 averages, 2021–2023. Crowd levels are our estimate.
Season by season
Spring (Mar–May)
Highs rise from 11°C in March to 22°C in May, with lows from -5°C to 6°C; snowstorms possible into May and up to 12 days of precipitation in May.
Summer (Jun–Aug)
Warm, dry and sunny at 28–32°C by day and 12–16°C at night, with afternoon thunderstorms in the mountains.
Autumn (Sep–Nov)
September is warm at 29°C, October cools to 20°C and November to 13°C; golden aspens in the high country in mid-to-late September.
Winter (Dec–Feb)
Highs of 5–9°C and lows down to -11°C; frequent sunshine, snow that melts fast in the city, and skiing in the mountains.
Events worth planning around
- Great American Beer Festival (usually September or October).
- National Western Stock Show and rodeo (January).
- Cinco de Mayo festival in Civic Center Park (early May).
- Concert season at Red Rocks Amphitheatre (roughly April to October).
When to avoid
Avoid the national park on summer weekends without a timed-entry reservation, when required. April and early May can bring sudden snowstorms that close mountain roads.
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Common questions
What is the best month to visit Denver?
September: warm days around 29°C, golden aspens in the mountains and fewer crowds than July.
Does Denver get a lot of snow?
It snows several times a winter, but the sunny climate means it usually melts within a day or two in the city.
When is ski season near Denver?
Roughly November to April, depending on snowfall; the main resorts are 1.5–2.5 hours away on Interstate 70.