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Climate in Colorado: Average Weather by City
Colorado spans more climate variety than most states, and its city normals prove it. The warmest city we track, Boulder, averages 51.5°F across the year, while the coolest, Colorado Springs, averages 50.4°F — a gap of 1.1°F inside one state. Rainfall runs from 15.4 in a year in Denver to 21.2 in in Boulder. This page compares every Colorado city in our dataset side by side using the same yardstick — the official NOAA 1991–2020 climate normals from each city's representative weather station — so you can pick the corner of the state that fits the weather you actually want, and the month to go see it.
Colorado cities compared
Every Colorado city in the dataset, ranked by yearly mean temperature. Click a city for its full month-by-month normals, season-by-season analysis, and best months to visit.
| City | Yearly Mean (°F) | Avg High | Avg Low | Rain (in/yr) | Snow (in/yr) | Warmest | Coldest |
|---|---|---|---|---|---|---|---|
| Boulder | 51.5 | 65.7 | 37.3 | 21.23 | 92.8 | Jul | Dec |
| Denver | 51.4 | 66.2 | 36.5 | 15.36 | 49.0 | Jul | Dec |
| Colorado Springs | 50.4 | 64.1 | 36.8 | 15.91 | 32.5 | Jul | Jan |
Boulder is Colorado's warm pole. Its year-round mean of 51.5°F peaks in July at 72.5°F and never drops below a 33.7°F mean in December. It collects 21.2 in of precipitation a year and 92.8 in of snow. For the full month-by-month profile, see the Boulder climate page.
Colorado Springs anchors the cool end. With a yearly mean of 50.4°F, a coldest month (January) averaging 31.7°F, and a warmest month that reaches only 72.4°F, it offers the state's most pronounced seasons — a swing of 40.7°F between its coldest and warmest months. Its profile is on the Colorado Springs climate page.
Rain, snow, and when to visit
Rain is its own map. Boulder is Colorado's wettest tracked city at 21.2 in a year — 1.4 times the 15.4 in that Denver, the driest, receives. For snow, Boulder leads the state at 92.8 in a year. Anyone choosing where in Colorado to live should weigh those totals as heavily as temperature: they decide everything from flood exposure to how many grey weeks a winter holds.
When to go where: Denver peaks in June; Colorado Springs peaks in June; Boulder peaks in June. Each city's own page ranks all twelve of its months by the same comfort score — mild mean temperatures rewarded, heavy rain and snow penalized — so the recommendation is always traceable to the normals table rather than to anyone's opinion, ours included.
Colorado climate FAQ
What is the warmest city in Colorado?
Of the Colorado cities in our dataset, Boulder is warmest with a yearly mean of 51.5°F (1991–2020 normals); Colorado Springs is coolest at 50.4°F.
What is the wettest city in Colorado?
Boulder averages the most precipitation, 21.23 in a year; the driest is Denver at 15.36 in.
Where in Colorado has the mildest climate?
By annual temperature swing, Boulder is the most even-keeled, varying just 38.8°F between its coldest and warmest months, while Denver swings 43.0°F.
Source: 1991–2020 U.S. Climate Normals, NOAA National Centers for Environmental Information (NCEI) — ncei.noaa.gov. One representative station per city; station names and IDs are listed on each city page. Figures checked October 2026.