Verdict: Fair month
Denver Weather in December
December is properly cold in Denver, with highs of only 8°C (46°F). Rain is occasional — about 4 wet days in a typical year. December is workable in Denver if your dates are fixed — just plan around the conditions.
Average high
8°C / 46°F
Average low
-5°C / 23°F
Rain days
~4
Precipitation
16 mm
What to pack for Denver in December
- A proper warm jacket, and a hat for mornings
- Comfortable walking shoes — every guide on this site assumes you'll use them
December against the rest of the year
Warmest in Denver: Jul (32°C / 90°F) · Coolest: Jan (5°C / 41°F) · Wettest: May (~10 rain days)
5°
-9°
Jan
5°
-11°
Feb
10°
-5°
Mar
16°
0°
Apr
22°
6°
May
29°
13°
Jun
32°
16°
Jul
32°
16°
Aug
28°
11°
Sep
20°
4°
Oct
12°
-3°
Nov
8°
-5°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)