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Best time to visit · Colorado, United States
For the most comfortable weather in Denver, aim for April & May and September & October. September tops our comfort score at 95/100, with highs around 82°F (28°C) and 1.4 in (36 mm) of rain. March, June and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
These averages also cover City Park and Downtown Denver & 16th Street.
Highs run from 44°F to 92°F across the year, and the yearly total is about 17.3 in (440 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 45°F7°C | 47°F8°C | 56°F14°C | 65°F18°C | 75°F24°C | 88°F31°C | 92°F33°C | 89°F32°C | 82°F28°C | 67°F20°C | 55°F13°C | 44°F7°C |
| Avg low | 24°F-4°C | 24°F-4°C | 31°F-1°C | 37°F3°C | 46°F8°C | 57°F14°C | 64°F18°C | 61°F16°C | 53°F12°C | 39°F4°C | 31°F-1°C | 24°F-5°C |
| Rain/snow | 0.7 in17 mm | 0.8 in21 mm | 1.3 in34 mm | 2.0 in51 mm | 2.3 in58 mm | 1.7 in42 mm | 2.4 in62 mm | 2.0 in52 mm | 1.4 in36 mm | 1.2 in30 mm | 0.7 in18 mm | 0.7 in19 mm |
| Humidity | 55% | 56% | 52% | 50% | 49% | 41% | 45% | 46% | 44% | 48% | 51% | 56% |
| Cloud | 56% | 57% | 55% | 55% | 56% | 46% | 47% | 47% | 38% | 44% | 48% | 56% |
| Comfort | 60 | 61 | 78 | 90 | 89 | 77 | 67 | 75 | 95 | 95 | 79 | 58 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~2,095 m (6,874 ft) to Denver's ~1,597 m (5,240 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The coldest season, with highs of 44–47°F (7–8°C) and lows down to 24°F (-5°C). It's the driest season, with only about 2.2 in (57 mm) of rain or snow, 13% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December – February), averaging 60/100.
Temperatures climb through the season, from 56°F highs in March to 75°F by May. About 5.6 in (143 mm) of rain falls across these months, 33% of the year's total. Nights dip below freezing in March. April & May are among the best-scoring months (season average 86/100).
The warmest stretch of the year, with highs of 88–92°F (31–33°C). It's the wettest season, with about 6.1 in (156 mm) of rain, 35% of the year's total. Lows bottom out around 57°F (14°C). June score well without being the very best (season average 73/100).
Temperatures slide from 82°F highs in September to 55°F by November. About 3.3 in (84 mm) of rain falls across these months, 19% of the year's total. Nights dip below freezing in November. September & October are among the best-scoring months (season average 90/100).
By comfort score: 8 Great, 3 Good and 1 Fair. Great months: March – June and August – November. Tap a month for its own guide.
For the most comfortable weather in Denver, aim for April & May and September & October. September tops our comfort score at 95/100, with highs around 82°F (28°C) and 1.4 in (36 mm) of rain. March, June and November are good shoulder-season months. The toughest months are December – February, mainly because of cool days.
July is the wettest month, averaging about 2.4 in (62 mm) of rain. January is the driest, with about 0.7 in (17 mm). The yearly total is around 17.3 in (440 mm).
December is the coldest, with average lows of 24°F (-5°C) and highs of 44°F (7°C). The warmest is July, with average highs of 92°F (33°C).
Not very: summer (June – August) humidity averages 44%, and highs peak around 92°F (33°C), so heat matters more than mugginess.
On average, yes: lows fall below 32°F (0°C) in November – March, bottoming out around 24°F (-5°C) in December.
Poll the group on April & May and September & October dates, then plan the days, packing and costs together.
