Weather in Jackson Hole from November 8 to November 14, 2022

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JACKSON, Wyo.– A strong storm system this past weekend deposited up to 20 inches of fresh snow in the Tetons as well as several inches of snow in the valley. Another storm cycle is underway this week with periods of moderate to heavy snow expected through Wednesday, followed by very cold temperatures this weekend.

Recap from November 1 to 7

Last week started off relatively mild with what will likely turn out to be our last 50 degree highs of the year. A cold front crossed last Wednesday, signaling a shift to a more wintery pattern, followed by a major storm Friday night and Saturday.

Snow totals during the storm from Friday night through Saturday reached 20 inches on both Jackson Hole High Mountain and Grand Targhee, while the Valley picked up several inches of snow before the rainfall turned into a mixed rain/snow Saturday afternoon.

Monday morning snowfall totals over the previous seven days included 24 inches at Grand Targhee, 21 to 24 inches at Jackson Hole Mountain Resort high mountain, 18 inches at JHMR mid-mountain and 3 to 7 inches at the Jackson Hole Valley.

Another storm arrived on Monday and produced heavy snow in the Tetons as well as a rain/snow mix in the valley, although light accumulations occurred at the valley floor. At higher elevations, snow reports are not available Monday evening, but the forecast was for 6 to 12 inches of new snow above 8,000 feet.

High temperatures in the valley over the previous week ranged from 36°F on November 2 to 55°F on November 1, while low temperatures ranged from 13°F on November 3 to 26°F on November 2 .

Total liquid equivalent precipitation in Jackson during the seven-day period ending Monday morning was 0.50 inches and total snowfall was 2.7 inches.

Forecast from Tuesday (8/11) to Monday (14/11)

A storm system will continue to impact the Tetons on Tuesday and Wednesday as several pulses of Pacific moisture and energy arrive from the southwest.

Snow is expected to continue for the first half of the day through at least Tuesday, with some possible lulls in the afternoon. Temperatures will warm up enough in the afternoon for persistent showers to turn to rain in the valley.

The southern heat surge is expected to peak Tuesday evening as another increase in precipitation occurs with rain (or a rain/snow mix) continuing into the valley as heavy, wet snow falls high up. The rain/snow line could reach up to 7,000 feet.

Late Tuesday evening/early Wednesday morning a stronger cold front will arrive with snow levels settling to the valley floor. Periods of moderate to heavy snow will then continue through Wednesday noon with light accumulations expected in the valley as well.

Gusty winds will be blowing throughout the day on Wednesday which, combined with snow and falling temperatures, will result in difficult travel conditions over the Teton Pass, especially in the morning.

From Wednesday afternoon to Thursday afternoon, persistent humidity will bring additional light to moderate flurries favoring higher elevations and western slopes, while the valley will experience more intermittent periods of flurries or light snow.

Persistent snow showers will end on Thursday evening, and once that happens, be prepared for the cold! A major early season cold snap is expected to set in as modified arctic air spreads in from the north, and we will also be heading into a dry pattern to close out the week.

Friday’s highs will be in the mid-20s in the valley before dropping below zero for the first time this year on Friday evening. On average, the first sub-zero temperature in Jackson occurs in late November, so we’ll be a few weeks ahead of schedule this year.

Saturday, an inversion is likely to persist all day with highs struggling to get out of the valley teens. On Sunday, a weak cold front in the upper atmosphere is expected to weaken the inversion somewhat, but temperatures will remain below average for mid-November.

On Monday we may see a weak storm system approaching with a possibility of light snow, but confidence is low at this time.

Extended Outlook

Next week, confidence is high that a colder than average pattern will continue as moisture remains limited. The door will be open for weak systems to occasionally move into the western US which could bring light snow to the Tetons, but the pattern does not look conducive to strong storms.

Alan Smith, Meteorologist

Climatology of the city of Jackson from November 8 to 14:

Medium top: 43

Medium Low: 17

High record: 64 (10 November 1954)

Record low: -22 (November 13, 1916)

Precipitation since October 1: 1.47″ (81% of average)

Snowfall in the city since October 1: 7.4″ (estimated)

Snowfall at Rendezvous Bowl since October 1: 53″

Rendezvous Bowl snow depth: 23″

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