Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

30°F

-1°C

Humidity	66%
Wind Speed	S 8 MPH
Barometer	NA
Dewpoint	20°F (-7°C)
Visibility	NA
Wind Chill	22°F (-6°C)
Last update	27 Dec 04:15 AM MST

More Information:

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

Extended Forecast for

6 Miles WSW Gardiner MT

Winter Weather Advisory December 27, 05:04am until December 27, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory December 27, 05:04am until December 27, 05:00pm
NOW until 5:00pm Sat
Winter Weather Advisory
Overnight
Low: 17 °F
Snow Likely
and Very
Windy
Saturday
High: 16 °F⇓
Snow and
Windy then
Chance Snow
and Breezy
Saturday Night
Low: -6 °F
Blustery.
Slight Chance
Snow then
Partly Cloudy
Sunday
High: 9 °F
Cold
Sunday Night
Low: 0 °F
Mostly Clear
and Breezy
Monday
High: 15 °F
Sunny and
Breezy then
Sunny
Monday Night
Low: 8 °F
Partly Cloudy
and Breezy
Tuesday
High: 18 °F
Partly Sunny
and Breezy
then Mostly
Sunny

Detailed Forecast

Overnight

Snow likely. Mostly cloudy, with a steady temperature around 17. Wind chill values as low as -5. Very windy, with a southwest wind around 36 mph, with gusts as high as 55 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of 1 to 3 inches possible.

Saturday

Snow, mainly before 4pm. Temperature falling to around 4 by 5pm. Wind chill values as low as -15. Windy, with a southwest wind 27 to 32 mph becoming west 17 to 22 mph in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

Saturday Night

A 20 percent chance of snow before 11pm. Partly cloudy, with a low around -6. Wind chill values as low as -25. Blustery, with a northwest wind 13 to 17 mph, with gusts as high as 26 mph.

Sunday

Sunny and cold, with a high near 9. Wind chill values as low as -25. Southwest wind 8 to 11 mph.

Sunday Night

Mostly clear, with a low around 0. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 26 mph.

Monday

Sunny, with a high near 15. Breezy, with a southwest wind 9 to 15 mph, with gusts as high as 23 mph.

Monday Night

Partly cloudy, with a low around 8. Breezy, with a south southwest wind 14 to 17 mph, with gusts as high as 26 mph.

Tuesday

Partly sunny, with a high near 18. Breezy.

Tuesday Night

Partly cloudy, with a low around 10. Breezy.