Sheridan weather in December: Sheridan, Wyoming: normal highs, lows, rain and records for December
Sheridan in December has a normal high of 37°F and a normal low of 12°F, a daily mean of 25°F, falling from 40°F on the 1st to 36°F by the 31st. Measurable precipitation falls on 7 days in a normal December, 0.54 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 3°C and low of −11°C, 14 mm of precipitation in December.
- NOAA stationSheridan Airport
- Station IDUSW00024029
- Location44.77°N 106.97°W
- Elevation3,945 ft (1,202 m)
- Population19,813
- Jan 36° 12°
- Feb 38° 14°
- Mar 49° 22°
- Apr 57° 30°
- May 66° 39°
- Jun 77° 47°
- Jul 88° 54°
- Aug 87° 52°
- Sep 76° 43°
- Oct 60° 31°
- Nov 47° 20°
- Dec 37° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Sheridan in December?
The normal high is 37°F and the normal low 12°F, for a daily mean of 24.5°F. December is 8.8°F cooler than November and 0.5°F warmer than January. December is the 11th warmest month of the year in Sheridan and the 12th wettest. Across the month the normal high falls 4°F, from 40°F on December 1 to 36°F on December 31. From one year to the next December's mean temperature typically moves about 5.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 20°F and 30°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 40°F | 15°F | 24% | 7% |
| December 8 | 38°F | 13°F | 23% | 6% |
| December 15 | 36°F | 12°F | 23% | 6% |
| December 22 | 36°F | 11°F | 23% | 6% |
| December 31 | 36°F | 11°F | 24% | 6% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 24)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 40°F | 15°F | 24% | 7% | 9 h 10 min |
| December 2 | 40°F | 15°F | 24% | 7% | 9 h |
| December 3 | 39°F | 15°F | 24% | 6% | 9 h |
| December 4 | 39°F | 14°F | 24% | 6% | 9 h |
| December 5 | 39°F | 14°F | 23% | 6% | 9 h |
| December 6 | 38°F | 14°F | 23% | 6% | 9 h |
| December 7 | 38°F | 13°F | 23% | 6% | 9 h |
| December 8 | 38°F | 13°F | 23% | 6% | 9 h |
| December 9 | 37°F | 13°F | 23% | 6% | 8 h 50 min |
| December 10 | 37°F | 13°F | 23% | 6% | 8 h 50 min |
| December 11 | 37°F | 13°F | 23% | 6% | 8 h 50 min |
| December 12 | 37°F | 12°F | 23% | 6% | 8 h 50 min |
| December 13 | 37°F | 12°F | 23% | 6% | 8 h 50 min |
| December 14 | 36°F | 12°F | 23% | 6% | 8 h 50 min |
| December 15 | 36°F | 12°F | 23% | 6% | 8 h 50 min |
| December 16 | 36°F | 12°F | 23% | 6% | 8 h 50 min |
| December 17 | 36°F | 12°F | 23% | 6% | 8 h 50 min |
| December 18 | 36°F | 12°F | 23% | 6% | 8 h 50 min |
| December 19 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 20 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 21 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 22 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 23 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 24 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 25 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 26 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 27 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 28 | 36°F | 11°F | 23% | 6% | 8 h 50 min |
| December 29 | 36°F | 11°F | 24% | 6% | 8 h 50 min |
| December 30 | 36°F | 11°F | 24% | 6% | 8 h 50 min |
| December 31 | 36°F | 11°F | 24% | 6% | 8 h 50 min |
- Normal high
- 37°FDecember average
- Normal low
- 12°FDecember average
- Precipitation
- 0.54 inmonth total
- Days with precipitation
- 70.01 inch or more
- Nights at 32°F or colder
- 31
- Daylight
- 9 h 10 min to 8 h 50 minDecember 1 to December 31
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024029; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Sheridan in December?
On a given December day the chance of 0.01 inch or more is 23% on average, highest around December 1 (24%). In all, 0.54 in falls on 7 days of a normal December.
In a normal December in Sheridan, 31 nights fall to freezing and 10 days stay below freezing all day.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024029.
How humid and windy is Sheridan in December?
At 3 p.m. the normal temperature is 30°F with 56% relative humidity and a dew point of 16°F; at 6 a.m. it is 18°F with 72% humidity. The wind averages 6.4 mph, most often from the 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. | 18°F | 11°F | 72% | 6.1 mph | 61% |
| 9 a.m. | 20°F | 12°F | 71% | 5.9 mph | 57% |
| noon | 28°F | 15°F | 58% | 6.9 mph | 61% |
| 3 p.m. | 30°F | 16°F | 56% | 7.4 mph | 60% |
| 6 p.m. | 23°F | 14°F | 70% | 6.9 mph | 62% |
| 9 p.m. | 21°F | 13°F | 72% | 5.8 mph | 60% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024029. 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 Sheridan?
The warmest December temperature on Sheridan's official record (since 1907) is 77°F, on December 5, 1939; the coldest is −41°F, on December 9, 1919. The wettest December brought 2.41 in (1989); the snowiest, 43.5 inches (1989).
The December mean against the 1991-2020 normal of 24.5°F: 2021 26.9°F (+2.4), 2022 18.4°F (−6.1), 2023 34.5°F (+10.0), 2024 34.6°F (+10.1), 2025 32.2°F (+7.7). 4 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 26.9°F | +2.4°F | 1.02 in |
| 2022 | 18.4°F | −6.1°F | 1.03 in |
| 2023 | 34.5°F | +10.0°F | 0.10 in |
| 2024 | 34.6°F | +10.1°F | 0.06 in |
| 2025 | 32.2°F | +7.7°F | 1.38 in |
Source: records: ACIS, NWS threaded record SHRthr; recent months: ACIS, station USW00024029. Records and recent months use complete months only.
How does December in Sheridan 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; Sheridan's is 37°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.