Denver Climate by Month
Denver, Colorado, United States
Hot summers and cold winters, with rain spread through the year.
Denver has hot summers and cold winters, with rain spread through the year. Expect highs of 91°F (33°C) in July and 46°F (8°C) in December, with the coldest nights (January) near 20°F (-7°C). It gets 15 in (375 mm) of rain a year, spread across the months. The air is dry, averaging 43% relative humidity.
- Warmest month
- 91°F(33°C)
- Average high, July
- Coldest nights
- 20°F(-7°C)
- Average low, January
- Rain per year
- 15 in(375 mm)
- No clear rainy season
- Humidity
- 43%
- Sunniest: June
Best and worst months in Denver
Best for weatherThe most comfortable weather comes in May and September, with highs around 77°F (25°C) and about 1.7 in (44 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 46°F (8°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in May.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Denver weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 47°F(9°C) | 20°F(-7°C) | 0.5 in(13 mm) | 46% | 2.4 |
| FebFebruary | 48°F(9°C) | 21°F(-6°C) | 0.6 in(14 mm) | 44% | 3.4 |
| MarMarch | 57°F(14°C) | 28°F(-2°C) | 1.2 in(31 mm) | 43% | 4.6 |
| AprApril | 64°F(18°C) | 35°F(2°C) | 1.8 in(45 mm) | 42% | 5.4 |
| MayMayBest | 73°F(23°C) | 44°F(7°C) | 2.3 in(58 mm) | 42% | 6.4 |
| JunJune | 85°F(30°C) | 54°F(12°C) | 1.5 in(39 mm) | 37% | 7.0 |
| JulJuly | 91°F(33°C) | 60°F(15°C) | 1.8 in(46 mm) | 40% | 7.0 |
| AugAugust | 88°F(31°C) | 58°F(14°C) | 1.5 in(39 mm) | 43% | 6.0 |
| SepSeptemberBest | 80°F(27°C) | 49°F(10°C) | 1.2 in(30 mm) | 39% | 5.2 |
| OctOctober | 67°F(19°C) | 37°F(3°C) | 1.1 in(27 mm) | 46% | 3.7 |
| NovNovember | 55°F(13°C) | 27°F(-3°C) | 0.8 in(20 mm) | 46% | 2.6 |
| DecDecember | 46°F(8°C) | 20°F(-7°C) | 0.5 in(13 mm) | 47% | 2.2 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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