Monthly climate guide
Denver weather in December
December in Denver is typically cold, with average daytime highs around 5°C (41°F) and night-time lows near -7°C (20°F). The month usually brings about 18 mm of rain (very dry) and is a mix of sun and cloud. Daytime highs are 6°C cooler than November and about the same as January.
What stands out in December
- Seasonally, December counts as early winter in Denver.
- Nights often drop below freezing (average low -7°C), so expect frost and icy mornings.
- Denver is usually about 11°C warmer than Aspen, 170 km away, in December.
- It's one of the drier months, with about 51% less rain than Denver's average.
December is typically Denver's coolest month.
Avg high
5°C
41°F
Avg low
-7°C
20°F
Rainfall
18 mm
very dry
Humidity
55%
relative
Sky
51%
cloud · a mix of sun and cloud
Denver weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 5°C / 41°F | -6°C / 20°F | 18 mm | 55% | 54% |
| February | 6°C / 42°F | -7°C / 19°F | 26 mm | 57% | 55% |
| March | 12°C / 53°F | -3°C / 26°F | 32 mm | 51% | 52% |
| April | 15°C / 59°F | -1°C / 31°F | 46 mm | 50% | 56% |
| May | 20°C / 68°F | 4°C / 39°F | 69 mm | 51% | 57% |
| June | 29°C / 83°F | 11°C / 52°F | 38 mm | 40% | 44% |
| July | 30°C / 86°F | 15°C / 58°F | 67 mm | 47% | 47% |
| August | 29°C / 84°F | 14°C / 56°F | 42 mm | 45% | 46% |
| September | 25°C / 78°F | 10°C / 49°F | 42 mm | 45% | 40% |
| October | 18°C / 64°F | 2°C / 35°F | 27 mm | 48% | 43% |
| November | 11°C / 52°F | -3°C / 27°F | 20 mm | 50% | 45% |
| December | 5°C / 41°F | -7°C / 20°F | 18 mm | 55% | 51% |
What to pack for December
- A proper insulated winter coat
- A hat, scarf and gloves
- Thermal base layers and warm, grippy boots for icy mornings
Is December a good time to visit Denver?
Compare the months in the chart above to find your ideal window.
Best time to visit Denver →Other United States cities in December
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Denver weather in December. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/denver/december
<a href="https://weathercompare.eu/weather/usa/denver/december">Denver weather in December</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/denver" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Denver weather in December"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/denver/december">Denver weather in December</a> – WeatherCompare</p>
Denver in December: quick answers
Is December a good time to visit Denver?
December is cool in Denver, with highs around 5°C. Better for museums and city walks than the beach, and usually quieter.
How warm is Denver in December?
Average highs are about 5°C (41°F) and average lows about -7°C (20°F), based on 10 years of daily data.
Does it rain a lot in Denver in December?
Denver typically gets around 18 mm of rain in December — very dry.
Figures are long-term averages for the area around Denver (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.