Denver, CO weather by month
West · Station: Denver International Airport (DIA), CO · NOAA 1991–2020 Climate Normals
The best time to visit Denver, CO is October, when average daytime highs are comfortable and rainfall sits at or below the city's monthly average. Denver is hottest in July (avg high 90°F) and coolest in December (avg high 44°F). The wettest month is May (2.2 in) and the driest is January (0.4 in). Overall the annual mean temperature is about 51.3°F with 14.6 in of precipitation a year and 49 in of snow.
Source: NOAA NCEI U.S. Climate Normals 1991–2020. Data as of June 2026.
Monthly weather averages for Denver
| Month | Avg high (°F) | Avg low (°F) | Avg precip (in) | Avg snow (in) |
|---|---|---|---|---|
| January | 45 | 19 | 0.4 | 6.4 |
| February | 46 | 20 | 0.4 | 7.6 |
| March | 56 | 28 | 0.9 | 8.8 |
| April | 62 | 34 | 1.7 | 6.2 |
| May | 71 | 44 | 2.2 | 1.4 |
| June | 83 | 53 | 1.9 | 0 |
| July | 90 | 60 | 2.1 | 0 |
| August | 88 | 58 | 1.6 | 0 |
| September | 80 | 50 | 1.4 | 0.8 |
| October | 65 | 37 | 1 | 3.9 |
| November | 53 | 26 | 0.6 | 7.3 |
| December | 44 | 18 | 0.4 | 6.6 |
Source: NOAA NCEI U.S. Climate Normals 1991–2020. Data as of June 2026.
Best time to visit Denver
Based on the normals above, the most pleasant window is October. In those months daytime highs are in the mild-to-warm range and precipitation is no higher than the city's typical month, so you avoid both the peak hot of July (when highs reach about 90°F — stay hydrated and seek shade midday) and the cool, darker conditions around December (highs near 44°F). Use the packing & comfort tool to check any specific month.
How Denver compares
Denver's 14.6 in of annual precipitation and 51.3°F mean temperature put it in context with other US cities. See where it ranks for warmest in January, rainiest overall and driest overall, or browse the full list of cities.
Frequently asked questions
What is the best time to visit Denver?
The most comfortable time to visit Denver, CO is October, when average daytime highs are mild and rainfall is at or below the city's average. Denver is hottest in July (avg high 90°F) and coolest in December (avg high 44°F), per NOAA 1991–2020 Climate Normals.
What is the average temperature in Denver?
Denver's annual mean temperature is about 51.3°F. The warmest month is July (average high 90°F, low 60°F) and the coolest is December (average high 44°F, low 18°F).
How much rain does Denver get?
Denver receives about 14.6 inches of precipitation a year. The wettest month is May (2.2 in) and the driest is January (0.4 in).
Does it snow in Denver?
Yes. Denver averages about 49 inches of snow a year. Snow normally falls between late autumn and early spring; summer months see none.
Source
Monthly averages from the NOAA NCEI U.S. Climate Normals 1991–2020, station Denver International Airport (DIA), CO (reference values verified against the published normals). Climate normals describe a 30-year average, not a forecast; any individual year can differ. See our methodology for how "best time to visit" is derived.
Last updated: 2026-06-18