Denver in December: Weather Guide
“Cool and moody. Best paired with warm rooms and long lunches.”
Roughly 4 rainy days across the month, on average.
By the time December arrives, Denver is running on a raw chill that settles into stone, and daily plans start to reshape themselves around it. Averages sit around 7.5°C (45.5°F) by day and -6°C (21.2°F) after dark, with rainfall near 15 mm across roughly 3.4 rainy days — sliding through as brief afternoon showers. Daylight runs about 7.9 hours per day, shorter daylight that concentrates walking hours, and the season stamps its signature on details like the golden dome of the Colorado State Capitol.
On the ground, cold shapes the timing. Time around LoDo streets shows best in mid-morning light before the chill deepens; warm interiors — cafés, museums, shops near RiNo art walks — carry the middle of the day. Evenings run short outdoors and long indoors, which suits the local rhythm rather than fighting it.
Reading across 11 complete years (2015–2025), December in Denver has trended less predictable in recent seasons, with the last few years pushing daytime highs and rainfall patterns modestly away from the older normals. The 2026 signal so far tracks the recent shape rather than the long-run midpoint — meaning what you see above is weighted to how this month has actually been running, not a smoothed 30-year picture that masks the shift.
For travellers planning around 2026, this profile is the honest baseline. Match the packing list to the numbers — not to the month name — and you avoid the classic mismatch of arriving with the wrong shell, the wrong shoes, or the wrong daylight assumptions. The rest of this page breaks down what to wear, what to do, and how the season tends to run for Denver visitors in 2026.
Denver is a base camp, not the destination; locals ski Loveland or A-Basin, not Vail. LoDo is played out; RiNo and Baker have the real food and dive bars. Green chile smothers every breakfast burrito; ask for pork green over vegetarian. The RTD A-line from DIA to Union Station beats any Uber. Weed dispensaries are everywhere but public consumption is illegal; hotels enforce this. Altitude sickness hits day two, not day one; hydrate on arrival and skip alcohol the first night.
What to pack for Denver in December
With highs only near 7.5°C and lows around -6°C, cold-weather kit is non-negotiable, especially for long walking days.
- a heavy coat
- thermals
- waterproof boots
- gloves
- a beanie
What to pack for Denver in December
- →Lightweight fleeceAmazon · shop this
- →Merino travel socksAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
- →Anti-theft crossbody bagAmazon · shop this
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Where to stay in Denver
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Denver across trusted platforms.
Compare hotels on Booking.com→Estimated December trip to Denver
Peak season prices — book early or shift by 2–3 weeks to save. Rule-based estimates from a couple based in London — actual prices vary.
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Delayed flight to Denver?
Flights to Denver in December can be delayed by storms. Claim up to €600 if yours is 3+ hours late. EU regulations cover flights departing from or arriving in the EU/UK.
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Things worth doing
Best-fit activities include craft-brewery visits, museum days, sports events, and mountain drives — a mix suited to the month's daylight and weather pattern.
December vs. the rest of the year
How this month compares in Denver. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Denver
While December has its own character in Denver, the data-backed best months to visit Denver are April, June, September, October. These months combine the most favourable temperatures, rainfall, and sunshine across an 11-year climate record (2015–2025).
See the full best-time-to-visit guide for DenverOther places with a similar climate right now
Denver in December — FAQ
Q01Should I visit Denver in December?
Should I visit Denver in December?
It is a fair time to visit — expect variable conditions and plan flexibility. In December, Denver averages a high of 8°C (46°F) and a low of -6°C (21°F), with 15mm of rainfall across roughly 4 rainy days. Mid-September Indian summer; South Platte cottonwoods yellow, Red Rocks concerts still run without snow risk, and Rocky Mountain National Park elk rut echoes across meadows.
Q02What temperatures should I expect in Denver during December?
What temperatures should I expect in Denver during December?
The average high temperature in Denver during December is 8°C (46°F), with an average low of -6°C (21°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive). January bombogenesis storms drop 30cm in 12 hours; the mile-high altitude means sun still burns your face at minus 15C, and I-70 to ski country closes east and west.
Q03Is December a rainy month in Denver?
Is December a rainy month in Denver?
Denver averages approximately 4 rainy days in December, with a total monthly rainfall of about 15mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04How should I dress for Denver in December?
How should I dress for Denver in December?
For Denver in December, pack a warm winter coat, a merino base layer for evenings, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. A humidifier or saline nasal spray; Denver's 20 percent humidity cracks lips and cracks contact lenses within 48 hours.
Q05Is December a busy travel month for Denver?
Is December a busy travel month for Denver?
Tourist crowds in Denver during December are typically low — winter is off-season, meaning quiet streets and better hotel deals. Consider this when planning accommodation — prices track crowd levels closely. Denver is a base camp, not the destination; locals ski Loveland or A-Basin, not Vail. LoDo is played out; RiNo and Baker have the real food and dive bars. Green chile smothers every breakfast burrito; ask for pork green over vegetarian. The RTD A-line from DIA to Union Station beats any Uber. Weed dispensaries are everywhere but public consumption is illegal; hotels enforce this. Altitude sickness hits day two, not day one; hydrate on arrival and skip alcohol the first night.