Vigorous System Impacting the Northwest; Large System To Affect East

A potent storm system is delivering heavy rainfall, strong winds, rough surf and beach erosion along the Pacific Northwest coast with mountain snow inland. Expect a couple more systems to arrive late week into the weekend. Meanwhile, another developing large scale system will deliver a heavy rain and renewed flood threat to much of the East late Wednesday through Friday, which may impact travel. Read More >

Hazardous Weather Conditions

En Español

Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

Lat: 44.97722°NLon: 110.69528°WElev: 6127ft.

34°F

1°C

Humidity	69%
Wind Speed	S 8 G 11 MPH
Barometer	NA
Dewpoint	24°F (-4°C)
Visibility	NA
Wind Chill	27°F (-3°C)
Last update	18 Dec 8:15 pm MST

More Information:

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

Extended Forecast for

Mount Holmes WY

Winter Weather Advisory until December 19, 12:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 19, 12:00pm

NOW until
12:00pm Wed

Winter Weather Advisory
Tonight

Snow and
Areas Blowing
Snow
Low: 16 °F
Wednesday

Snow Likely
and Areas
Blowing Snow
High: 22 °F
Wednesday
Night

Mostly Cloudy
and Breezy
Low: 14 °F
Thursday

Breezy.
Slight Chance
Snow then
Mostly Sunny
High: 24 °F
Thursday
Night

Chance Snow
and Breezy
Low: 17 °F
Friday

Snow Likely
and Windy
High: 21 °F
Friday
Night

Chance Snow
and Breezy
Low: 6 °F
Saturday

Slight Chance
Snow then
Partly Sunny
High: 14 °F

Detailed Forecast

Tonight

Snow. Areas of blowing snow. Low around 16. Wind chill values as low as zero. Windy, with a west southwest wind 23 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 3 to 5 inches possible.

Wednesday

Snow likely, mainly before 11am. Areas of blowing snow. Mostly cloudy, with a high near 22. Wind chill values as low as zero. Windy, with a west wind 23 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Wednesday Night

Mostly cloudy, with a low around 14. Wind chill values as low as -5. Breezy, with a west southwest wind around 18 mph, with gusts as high as 29 mph.

Thursday

A 20 percent chance of snow before 11am. Partly sunny, with a high near 24. Wind chill values as low as zero. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 33 mph.

Thursday Night

A 50 percent chance of snow after 11pm. Mostly cloudy, with a low around 17. Breezy, with a south southwest wind around 23 mph, with gusts as high as 34 mph. New snow accumulation of 1 to 2 inches possible.

Friday

Snow likely, mainly before 11am. Mostly cloudy, with a high near 21. Windy, with a southwest wind 18 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 70%.

Friday Night

A 30 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 6. Breezy, with a west southwest wind 11 to 16 mph, with gusts as high as 24 mph.

Saturday

A 20 percent chance of snow before 11am. Mostly cloudy, with a high near 14.

Saturday Night

A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 6.

Sunday

A 40 percent chance of snow. Mostly cloudy, with a high near 16. Breezy.

Sunday Night

A chance of snow. Mostly cloudy, with a low around 10. Breezy.

Monday

A chance of snow. Cloudy, with a high near 19. Breezy.

Monday Night

A chance of snow. Cloudy, with a low around 10. Breezy.