Cheyenne weather in December: Cheyenne, Wyoming: normal highs, lows, rain and records for December
Cheyenne in December has a normal high of 39°F and a normal low of 18°F, a daily mean of 29°F, falling from 42°F on the 1st to 39°F by the 31st. Measurable precipitation falls on 6 days in a normal December, 0.48 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 4°C and low of −8°C, 12 mm of precipitation and 22 cm of snow in December.
- NOAA stationCheyenne Weather Office Airport
- Station IDUSW00024018
- Location41.15°N 104.81°W
- Elevation6,128 ft (1,868 m)
- Population65,704
- Jan 40° 18°
- Feb 41° 18°
- Mar 49° 25°
- Apr 55° 31°
- May 64° 40°
- Jun 77° 49°
- Jul 84° 56°
- Aug 82° 54°
- Sep 73° 46°
- Oct 59° 34°
- Nov 48° 25°
- Dec 39° 18°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Cheyenne in December?
The normal high is 39°F and the normal low 18°F, for a daily mean of 28.7°F. December is 7.4°F cooler than November and 0.5°F cooler than January. December is the 12th warmest month of the year in Cheyenne and the 11th wettest. Across the month the normal high falls 3°F, from 42°F on December 1 to 39°F on December 31. From one year to the next December's mean temperature typically moves about 2.9°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 26°F and 32°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 19%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 42°F | 20°F | 19% | 6% |
| December 8 | 40°F | 19°F | 19% | 6% |
| December 15 | 39°F | 18°F | 19% | 6% |
| December 22 | 39°F | 17°F | 19% | 5% |
| December 31 | 39°F | 18°F | 18% | 5% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 19)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 42°F | 20°F | 19% | 6% | 9 h 30 min |
| December 2 | 41°F | 20°F | 19% | 6% | 9 h 30 min |
| December 3 | 41°F | 20°F | 19% | 6% | 9 h 20 min |
| December 4 | 41°F | 19°F | 19% | 6% | 9 h 20 min |
| December 5 | 40°F | 19°F | 19% | 6% | 9 h 20 min |
| December 6 | 40°F | 19°F | 19% | 6% | 9 h 20 min |
| December 7 | 40°F | 19°F | 19% | 6% | 9 h 20 min |
| December 8 | 40°F | 19°F | 19% | 6% | 9 h 20 min |
| December 9 | 39°F | 18°F | 19% | 6% | 9 h 20 min |
| December 10 | 39°F | 18°F | 19% | 6% | 9 h 20 min |
| December 11 | 39°F | 18°F | 19% | 6% | 9 h 20 min |
| December 12 | 39°F | 18°F | 19% | 6% | 9 h 20 min |
| December 13 | 39°F | 18°F | 19% | 6% | 9 h 20 min |
| December 14 | 39°F | 18°F | 19% | 6% | 9 h 10 min |
| December 15 | 39°F | 18°F | 19% | 6% | 9 h 10 min |
| December 16 | 39°F | 18°F | 19% | 6% | 9 h 10 min |
| December 17 | 39°F | 18°F | 19% | 6% | 9 h 10 min |
| December 18 | 39°F | 18°F | 19% | 6% | 9 h 10 min |
| December 19 | 39°F | 17°F | 19% | 6% | 9 h 10 min |
| December 20 | 39°F | 17°F | 19% | 5% | 9 h 10 min |
| December 21 | 39°F | 17°F | 19% | 5% | 9 h 10 min |
| December 22 | 39°F | 17°F | 19% | 5% | 9 h 10 min |
| December 23 | 39°F | 17°F | 19% | 5% | 9 h 10 min |
| December 24 | 39°F | 18°F | 19% | 5% | 9 h 10 min |
| December 25 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 26 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 27 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 28 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 29 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 30 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
| December 31 | 39°F | 18°F | 18% | 5% | 9 h 10 min |
- Normal high
- 39°FDecember average
- Normal low
- 18°FDecember average
- Precipitation
- 0.48 inmonth total
- Days with precipitation
- 60.01 inch or more
- Snowfall
- 8.8 inmonth total
- Nights at 32°F or colder
- 29
- Daylight
- 9 h 30 min to 9 h 10 minDecember 1 to December 31
- Sunshine
- 75%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024018; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Cheyenne in December?
On a given December day the chance of 0.01 inch or more is 19% on average, highest around December 1 (19%). In all, 0.48 in falls on 6 days of a normal December.
In a normal December in Cheyenne, 29 nights fall to freezing, 9 days stay below freezing all day and snowfall averages 8.8 inches.
Snow falls on 7 days in a normal December, and an inch or more covers the ground on 9 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024018.
How humid and windy is Cheyenne in December?
At 3 p.m. the normal temperature is 35°F with 41% relative humidity and a dew point of 13°F; at 6 a.m. it is 24°F with 56% humidity. The wind averages 13.8 mph, most often from the west-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 24°F | 11°F | 56% | 13.2 mph | 73% |
| 9 a.m. | 28°F | 12°F | 51% | 14.0 mph | 71% |
| noon | 35°F | 13°F | 40% | 17.1 mph | 72% |
| 3 p.m. | 35°F | 13°F | 41% | 16.3 mph | 70% |
| 6 p.m. | 28°F | 13°F | 53% | 12.1 mph | 72% |
| 9 p.m. | 25°F | 12°F | 56% | 12.4 mph | 74% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024018. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in Cheyenne?
The warmest December temperature on Cheyenne's official record (since 1872) is 70°F, on December 2, 2021; the coldest is −28°F, on December 9, 1919. The wettest December brought 2.00 in (1913); the snowiest, 24.4 inches (2006).
The December mean against the 1991-2020 normal of 28.7°F: 2021 34.3°F (+5.6), 2022 28.2°F (−0.5), 2023 34.4°F (+5.7), 2024 35.6°F (+6.9), 2025 39.0°F (+10.3). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 34.3°F | +5.6°F | 0.48 in |
| 2022 | 28.2°F | −0.5°F | 0.18 in |
| 2023 | 34.4°F | +5.7°F | 0.31 in |
| 2024 | 35.6°F | +6.9°F | 0.05 in |
| 2025 | 39.0°F | +10.3°F | 0.21 in |
Source: records: ACIS, NWS threaded record CYSthr; recent months: ACIS, station USW00024018. Records and recent months use complete months only.
How does December in Cheyenne compare across Wyoming?
Across the 71 places PlainClimate covers in Wyoming, December normal highs run from 24°F in Bondurant to 43°F in Yoder; Cheyenne's is 39°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.