Aspen weather in December: Aspen, Colorado: normal highs, lows, rain and records for December
Aspen in December has a normal high of 34°F and a normal low of 9°F, a daily mean of 22°F, falling from 38°F on the 1st to 33°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 0.82 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 1°C and low of −13°C, 21 mm of precipitation in December.
- NOAA stationAspen Pitkin County Airport
- Station IDUSW00093073
- Location39.22°N 106.87°W
- Elevation7,720 ft (2,353 m)
- Population6,556
- Jan 35° 9°
- Feb 38° 12°
- Mar 46° 21°
- Apr 55° 28°
- May 65° 35°
- Jun 77° 42°
- Jul 82° 48°
- Aug 80° 47°
- Sep 72° 40°
- Oct 60° 29°
- Nov 45° 19°
- Dec 34° 9°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Aspen in December?
The normal high is 34°F and the normal low 9°F, for a daily mean of 21.8°F. December is 10.2°F cooler than November and 0.1°F warmer than January. December is the 11th warmest month of the year in Aspen and the 12th wettest. Across the month the normal high falls 5°F, from 38°F on December 1 to 33°F on December 31. From one year to the next December's mean temperature typically moves about 2.6°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 19°F and 24°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 35%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 38°F | 13°F | 32% | 10% |
| December 8 | 35°F | 11°F | 33% | 10% |
| December 15 | 34°F | 9°F | 34% | 10% |
| December 22 | 33°F | 8°F | 35% | 10% |
| December 31 | 33°F | 8°F | 34% | 10% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 27)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 38°F | 13°F | 32% | 10% | 9 h 40 min |
| December 2 | 37°F | 12°F | 32% | 10% | 9 h 40 min |
| December 3 | 37°F | 12°F | 32% | 10% | 9 h 40 min |
| December 4 | 37°F | 12°F | 32% | 10% | 9 h 30 min |
| December 5 | 36°F | 11°F | 33% | 10% | 9 h 30 min |
| December 6 | 36°F | 11°F | 33% | 10% | 9 h 30 min |
| December 7 | 36°F | 11°F | 33% | 10% | 9 h 30 min |
| December 8 | 35°F | 11°F | 33% | 10% | 9 h 30 min |
| December 9 | 35°F | 10°F | 33% | 10% | 9 h 30 min |
| December 10 | 35°F | 10°F | 34% | 10% | 9 h 30 min |
| December 11 | 35°F | 10°F | 34% | 10% | 9 h 30 min |
| December 12 | 34°F | 9°F | 34% | 10% | 9 h 30 min |
| December 13 | 34°F | 9°F | 34% | 10% | 9 h 30 min |
| December 14 | 34°F | 9°F | 34% | 10% | 9 h 30 min |
| December 15 | 34°F | 9°F | 34% | 10% | 9 h 30 min |
| December 16 | 34°F | 9°F | 35% | 10% | 9 h 30 min |
| December 17 | 34°F | 8°F | 35% | 10% | 9 h 30 min |
| December 18 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 19 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 20 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 21 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 22 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 23 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 24 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 25 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 26 | 33°F | 8°F | 35% | 10% | 9 h 20 min |
| December 27 | 33°F | 8°F | 34% | 9% | 9 h 20 min |
| December 28 | 33°F | 8°F | 34% | 10% | 9 h 30 min |
| December 29 | 33°F | 8°F | 34% | 10% | 9 h 30 min |
| December 30 | 33°F | 8°F | 34% | 10% | 9 h 30 min |
| December 31 | 33°F | 8°F | 34% | 10% | 9 h 30 min |
- Normal high
- 34°FDecember average
- Normal low
- 9°FDecember average
- Precipitation
- 0.82 inmonth total
- Days with precipitation
- 110.01 inch or more
- Nights at 32°F or colder
- 31
- Daylight
- 9 h 40 min to 9 h 30 minDecember 1 to December 31
- Sunshine
- 74%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093073; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Aspen in December?
On a given December day the chance of 0.01 inch or more is 34% on average, highest around December 19 (35%). In all, 0.82 in falls on 11 days of a normal December.
In a normal December in Aspen, 31 nights fall to freezing and 15 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093073.
What are the records for December in Aspen?
The warmest December temperature on this station's record (since 1998) is 59°F, on December 1, 1998; the coldest is −21°F, on December 8, 2005. The wettest December brought 2.34 in (2021).
The December mean against the 1991-2020 normal of 21.8°F: 2021 26.3°F (+4.5), 2022 21.0°F (−0.8), 2023 24.4°F (+2.6), 2024 24.4°F (+2.6), 2025 30.1°F (+8.3). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 26.3°F | +4.5°F | 2.34 in |
| 2022 | 21.0°F | −0.8°F | 1.07 in |
| 2023 | 24.4°F | +2.6°F | 0.53 in |
| 2024 | 24.4°F | +2.6°F | 0.40 in |
| 2025 | 30.1°F | +8.3°F | 0.31 in |
Source: records: ACIS, station USW00093073; recent months: ACIS, station USW00093073. Records and recent months use complete months only.
How does December in Aspen compare across Colorado?
Across the 125 places PlainClimate covers in Colorado, December normal highs run from 27°F in Crested Butte to 49°F in Campo; Aspen's is 34°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.