Greeley weather in December: Greeley, Colorado: normal highs, lows, rain and records for December
Greeley in December has a normal high of 43°F and a normal low of 18°F, a daily mean of 31°F, falling from 46°F on the 1st to 43°F by the 31st. Measurable precipitation falls on 4 days in a normal December, 0.55 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 6°C and low of −8°C, 14 mm of precipitation and 14 cm of snow in December.
- NOAA stationGreeley Unc
- Station IDUSC00053553
- Location40.40°N 104.70°W
- Elevation4,715 ft (1,437 m)
- From the center4 miles
- Population114,363
- Jan 44° 18°
- Feb 48° 20°
- Mar 59° 28°
- Apr 66° 35°
- May 75° 45°
- Jun 86° 54°
- Jul 92° 59°
- Aug 89° 57°
- Sep 82° 49°
- Oct 68° 37°
- Nov 54° 26°
- Dec 43° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Greeley in December?
The normal high is 43°F and the normal low 18°F, for a daily mean of 30.6°F. December is 9.1°F cooler than November and 0.2°F cooler than January. December is the 12th warmest month of the year in Greeley and the 10th wettest. Across the month the normal high falls 3°F, from 46°F on December 1 to 43°F on December 31. From one year to the next December's mean temperature typically moves about 3.8°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 27°F and 34°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 13%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 46°F | 21°F | 13% | 6% |
| December 8 | 44°F | 19°F | 12% | 5% |
| December 15 | 43°F | 17°F | 12% | 5% |
| December 22 | 42°F | 17°F | 12% | 6% |
| December 31 | 43°F | 17°F | 12% | 6% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 23)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 46°F | 21°F | 13% | 6% | 9 h 30 min |
| December 2 | 46°F | 20°F | 12% | 6% | 9 h 30 min |
| December 3 | 46°F | 20°F | 12% | 6% | 9 h 30 min |
| December 4 | 45°F | 20°F | 12% | 6% | 9 h 30 min |
| December 5 | 45°F | 20°F | 12% | 6% | 9 h 30 min |
| December 6 | 45°F | 19°F | 12% | 5% | 9 h 30 min |
| December 7 | 44°F | 19°F | 12% | 5% | 9 h 20 min |
| December 8 | 44°F | 19°F | 12% | 5% | 9 h 20 min |
| December 9 | 44°F | 19°F | 12% | 5% | 9 h 20 min |
| December 10 | 44°F | 18°F | 12% | 5% | 9 h 20 min |
| December 11 | 43°F | 18°F | 12% | 5% | 9 h 20 min |
| December 12 | 43°F | 18°F | 12% | 5% | 9 h 20 min |
| December 13 | 43°F | 18°F | 12% | 5% | 9 h 20 min |
| December 14 | 43°F | 18°F | 12% | 5% | 9 h 20 min |
| December 15 | 43°F | 17°F | 12% | 5% | 9 h 20 min |
| December 16 | 43°F | 17°F | 12% | 5% | 9 h 20 min |
| December 17 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 18 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 19 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 20 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 21 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 22 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 23 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 24 | 42°F | 17°F | 12% | 6% | 9 h 20 min |
| December 25 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 26 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 27 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 28 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 29 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 30 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
| December 31 | 43°F | 17°F | 12% | 6% | 9 h 20 min |
- Normal high
- 43°FDecember average
- Normal low
- 18°FDecember average
- Precipitation
- 0.55 inmonth total
- Days with precipitation
- 40.01 inch or more
- Snowfall
- 5.6 inmonth total
- Nights at 32°F or colder
- 30
- Daylight
- 9 h 30 min to 9 h 20 minDecember 1 to December 31
- Sunshine
- 76%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00053553; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Greeley in December?
On a given December day the chance of 0.01 inch or more is 12% on average, highest around December 1 (13%). In all, 0.55 in falls on 4 days of a normal December.
In a normal December in Greeley, 30 nights fall to freezing, 6 days stay below freezing all day and snowfall averages 5.6 inches.
Snow falls on 3 days in a normal December, and an inch or more covers the ground on 11 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00053553.
What are the records for December in Greeley?
The warmest December temperature on this station's record (since 1967) is 76°F, on December 4, 2007; the coldest is −24°F, on December 22, 1989. The wettest December brought 2.80 in (2006); the snowiest, 26.4 inches (2006).
The December mean against the 1991-2020 normal of 30.6°F: 2021 38.8°F (+8.2), 2022 28.8°F (−1.8), 2023 38.6°F (+8.0), 2024 37.5°F (+6.9), 2025 40.5°F (+9.9). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 38.8°F | +8.2°F | 0.35 in |
| 2022 | 28.8°F | −1.8°F | 0.76 in |
| 2023 | 38.6°F | +8.0°F | 0.09 in |
| 2024 | 37.5°F | +6.9°F | 0.00 in |
| 2025 | 40.5°F | +9.9°F | 0.23 in |
Source: records: ACIS, station USC00053553; recent months: ACIS, station USC00053553. Records and recent months use complete months only.
How does December in Greeley 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; Greeley's is 43°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.