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Climate · Jackson

Jackson in January

Cold and wet, as the days lengthen.

Typical weather, averaged over 30 years

January in Jackson is cold: highs near 30°F, lows near 12°F. Rain or snow falls on about four days a week, and the days lengthen by 32 minutes from the first week to the last.January in Jackson is cold: highs near -1°C, lows near -11°C. Rain or snow falls on about four days a week, and the days lengthen by 32 minutes from the first week to the last.

High
30°F-1°Caverage
Low
12°F-11°Caverage
Wet days
4a week · 51% of days
Daylight
9h 21mon average

Is January a good time to visit Jackson?

January 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 January sits in the year

week by week

Temperature

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

Chance of a wet day

51% of days in January, against 25% to 57% through the year.

Cloud cover

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

Daylight

9h 21m in January, against 9h 00m to 15h 22m through the year.

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

Either side

  1. December30°-1°low 11°low -12°4 wet days a weekRain on about four days a week.
  2. January30°-1°low 12°low -11°4 wet days a weekRain on about four days a week.
  3. February33°1°low 15°low -9°4 wet days a weekRain on about four days a week.

Where Jackson sits, in January

America/Boise
this place
typical high in January 40°F4°C95°F35°C
Sunrise, mid-January
7:53 AMsets 5:10 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 January, 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 January

high · low · wet days
See January 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.