Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into New Year's Day. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

Lat: 44.977222°NLon: 110.695278°WElev: 6138.0ft.

23°F

-5°C

Humidity	63%
Wind Speed	S 4 MPH
Barometer	NA
Dewpoint	12°F (-11°C)
Visibility	NA
Wind Chill	18°F (-8°C)
Last update	31 Dec 01:15 AM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles SSW Mammoth Hot Springs WY

Overnight
Low: 15 °F
Clear
Wednesday
High: 35 °F
Sunny
Wednesday Night
Low: 19 °F
Partly Cloudy
New Year's Day
High: 33 °F
Partly Sunny
then
Scattered
Snow Showers
Thursday Night
Low: 26 °F
Chance Snow
Showers
Friday
High: 34 °F
Chance Snow
Showers
Friday Night
Low: 29 °F
Mostly Cloudy
Saturday
High: 38 °F
Slight Chance
Snow Showers
and Breezy
Saturday Night
Low: 26 °F
Chance Snow
Showers and
Breezy

Detailed Forecast

Overnight

Clear, with a low around 15. South southwest wind around 8 mph.

Wednesday

Sunny, with a high near 35. South southwest wind 8 to 10 mph.

Wednesday Night

Partly cloudy, with a low around 19. South southwest wind around 9 mph.

New Year's Day

Scattered snow showers, mainly after 4pm. Partly sunny, with a high near 33. South wind 9 to 13 mph. Chance of precipitation is 30%.

Thursday Night

A 30 percent chance of snow showers, mainly before 11pm. Mostly cloudy, with a low around 26. South southwest wind around 9 mph.

Friday

A 30 percent chance of snow showers, mainly before 11am. Mostly cloudy, with a high near 34. South southwest wind around 10 mph, with gusts as high as 22 mph.

Friday Night

Mostly cloudy, with a low around 29. South southwest wind 10 to 13 mph, with gusts as high as 24 mph.

Saturday

A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 38. Breezy.

Saturday Night

A 30 percent chance of snow showers. Mostly cloudy, with a low around 26. Breezy.

Sunday

A 40 percent chance of snow showers. Mostly cloudy, with a high near 33.

Sunday Night

A slight chance of snow showers. Mostly cloudy, with a low around 25.

Monday

A chance of snow showers. Mostly cloudy, with a high near 32.