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Climate · Jackson

Jackson in December

Cold and wet, as the days hold steady.

Typical weather, averaged over 30 years

December in Jackson is cold: highs near 30°F, lows near 11°F. Rain or snow falls on about four days a week, and daylight holds at about 9 hours.December in Jackson is cold: highs near -1°C, lows near -12°C. Rain or snow falls on about four days a week, and daylight holds at about 9 hours.

High
30°F-1°Caverage
Low
11°F-12°Caverage
Wet days
4a week · 53% of days
Daylight
9h 00mon average

Is December a good time to visit Jackson?

December sits outside Jackson's best months, which run from July to September. Expect cold days and rain or snow on about four days a week.

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How December sits in the year

week by week

Temperature

Highs near 30°F in December, against 30°F to 83°F through the year.Highs near -1°C in December, against -1°C to 28°C through the year.

Chance of a wet day

53% of days in December, against 25% to 57% through the year.

Cloud cover

62% cover in December, against 26% to 62% through the year.

Daylight

9h 00m in December, against 9h 00m to 15h 22m through the year.

Week by week, lightly smoothed, with December shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. November41°5°low 19°low -7°3 wet days a weekRain on about three days a week.
  2. December30°-1°low 11°low -12°4 wet days a weekRain on about four days a week.
  3. January30°-1°low 12°low -11°4 wet days a weekRain on about four days a week.

Where Jackson sits, in December

America/Boise
this place
typical high in December 40°F4°C95°F35°C
Sunrise, mid-December
7:49 AMsets 4:48 PM
Above the sea
1,912 mhigh country
Latitude
43.5°Nnorthern hemisphere
Nearest of ours
Moose35 km north-east

The land around Jackson, shaded by its typical high in December, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in United States in December

high · low · wet days
See December on the planning mapThe whole year in Jackson

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Jackson. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,912 m) against the climate model's (2,059 m).Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match, and both highs and lows are adjusted for the town's height (1,912 m) against the climate model's (2,059 m). Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.