Jackson, WY weather in December
December in Jackson: very cold and snowy. Highs 26°F, lows 7°F, rain or snow on about 14 days and about 16.4 in of snow. This is the depth of winter in Jackson. Pack for serious cold.
- Normal high
- 26°F
- Normal low
- 7°F
- Wet days
- 14
- 1.8 in total
- Snowfall
- 16.4 in
- snow on the ground 30 days
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 30°F | 25°F |
| Normal low | 10°F | 5°F |
| Chance of a wet day | 40% | 44% |
| Sunrise / sunset | 7:36 am / 4:48 pm | 7:55 am / 4:56 pm |
| Daylight | 9.2 h | 9.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow14 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below30 of 31
- Snow on the groundsnow depth 1 in or more30 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 1.8 in; a dry December brings about 1.0 in and a wet one about 2.2 in (25th and 75th percentiles). Days with half an inch or more are rare. Normal snowfall is 16.4 in, with about 7 days of an inch or more.
How December varies from year to year
- Warmest December, 1991-20202004: average high 35°F
- Coolest December2016: average high 24°F
- Wettest December2016: 3.2 in
- Driest December1991: 0.5 in
- Highest reading55°F (December 1, 1995)
- Lowest reading-31°F (December 5, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 38°F | 26°F | 26°F |
| Normal low | 16°F | 7°F | 6°F |
| Wet days | 10 | 14 | 13 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 9.7 h | 9.0 h | 9.4 h |
Highs change by -12°F from November and 0°F into January.
Nearby alternatives in December
- Warmer: Billings, MT194 mi · high 37°F · 6 wet days
- Drier: Billings, MT194 mi · high 37°F · 6 wet days
How Jackson ranks in December
- Normal high372nd warmest of 378 cities; 4th of 4 in Wyoming
- Wet days330th driest of 378
- Comfortable days340th most of 340
What to pack for Jackson in December
- A warm jacket – lows near 7°F, highs near 26°F
- A rain jacket or umbrella – rain or snow on about 14 days
- Waterproof boots – snow on the ground on about 30 days
- A hat and gloves – about 30 freezing nights
Heating and cooling
December has 1503 heating degree days and 0 cooling degree days (base 65°F), 15% of the year's total heating and cooling demand.
Questions
How cold is Jackson in December?
The normal high is 26°F and the normal low is 7°F. From 1991 to 2020 the coldest December reading was -31°F (most recently on December 5, 1992).
Does it rain a lot in Jackson in December?
About 14 days in December have at least 0.01 in of precipitation, and the normal total is 1.8 in. The wettest December in 1991-2020 was in 2016 (3.2 in); the driest was in 1991 (0.5 in).
Does it snow in Jackson in December?
Yes. Normal snowfall in December is 16.4 in, and snow covers the ground on about 30 days.
Is December a good time to visit Jackson?
December ranks 12th of 12 months on our comfort score for Jackson (22 out of 100). It has almost no comfortable days. The best months are June and September.
Where the numbers come from
- Temperature, rain and snowfall: Jackson (USC00484910), 0.5 mi N of the city center, 6,210 ft . NOAA normals and daily records, 1991-2020.
- Snow depth: Moose (USC00486428), 12 mi N of the city center, 6,444 ft (206 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Frost dates: Moose 1 Nne (USW00004131), 13 mi NNE of the city center, 6,466 ft (228 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Rexburg-Madison County Apt (726818-94194), 58 mi WNW of the city center, 4,858 ft (1,380 ft lower than the city). Hourly observations, 1991-2020.
- Not available for this location: humidity and wind by hour and cloud cover (no station close enough or similar enough in elevation).