Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds from the Upper Midwest into the Northeast

A prolonged atmospheric river will continue to impact the Pacific Northwest into the Northern Rockies with heavy rainfall, areas of urban and river flooding, landslides, heavy mountain snow, and gusty winds into Thursday. A strong clipper system will bring the threat of heavy snow and high winds across the Upper Midwest/Great Lakes as well as portions of the interior Northeast and Appalachians. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

38°F

3°C

Humidity	37%
Wind Speed	W 4 MPH
Barometer	NA
Dewpoint	14°F (-10°C)
Visibility	NA
Wind Chill	35°F (2°C)
Last update	09 Dec 08:15 PM MST

More Information:

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

Extended Forecast for

Gardiner MT

Winter Storm Warning December 9, 09:20pm until December 10, 05:00pm

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 9, 09:20pm until December 10, 05:00pm
NOW until 5:00pm Wed
Winter Storm Warning
Tonight
Low: 33 °F
Scattered
Snow Showers
then
Rain/Snow
Likely
Wednesday
High: 50 °F
Showers
Likely
Wednesday Night
Low: 39 °F
Slight Chance
Showers
Thursday
High: 48 °F
Chance
Showers
Thursday Night
Low: 39 °F
Chance
Showers
Friday
High: 47 °F
Chance
Showers then
Slight Chance
Showers
Friday Night
Low: 33 °F
Slight Chance
Rain/Snow
Saturday
High: 46 °F
Slight Chance
Rain/Snow
then Mostly
Sunny

Detailed Forecast

Tonight

Rain likely, possibly mixed with snow showers. Snow level rising to 6200 feet after midnight. Mostly cloudy, with a low around 33. South southwest wind 7 to 9 mph becoming east southeast after midnight. Chance of precipitation is 70%. Little or no snow accumulation expected.

Wednesday

Showers likely, mainly before 9am. Mostly cloudy, with a high near 50. Southwest wind 10 to 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

Wednesday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 39. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.

Thursday

A 30 percent chance of showers, mainly after 11am. Mostly cloudy, with a high near 48. Southwest wind around 10 mph.

Thursday Night

A 50 percent chance of showers. Mostly cloudy, with a low around 39. Southwest wind 8 to 10 mph.

Friday

A 50 percent chance of showers, mainly before 11am. Mostly cloudy, with a high near 47. Southwest wind 8 to 10 mph.

Friday Night

A slight chance of rain and snow showers after 11pm. Snow level 7200 feet lowering to 6300 feet after midnight . Mostly cloudy, with a low around 33. South southwest wind around 10 mph. Chance of precipitation is 20%.

Saturday

A slight chance of rain and snow showers before 11am. Snow level 5500 feet rising to 6300 feet in the afternoon. Partly sunny, with a high near 46. Chance of precipitation is 20%.

Saturday Night

Partly cloudy, with a low around 28.

Sunday

Mostly sunny, with a high near 48.

Sunday Night

Partly cloudy, with a low around 28.

Monday

Partly sunny, with a high near 46.

Monday Night

A slight chance of rain and snow showers. Snow level 6200 feet lowering to 5500 feet after midnight . Mostly cloudy, with a low around 32.

Tuesday

A chance of rain and snow showers. Snow level 5400 feet rising to 6000 feet in the afternoon. Partly sunny, with a high near 46.