Wet Pattern Continues From the Northwest To Rockies; Major Storm System To Develop On Thursday Across Southern Plains

A vigorous system will slide from the Northwest to the Rockies on Wednesday to keep intact the wet pattern across the extended region. Heavy to excessive rain, intense mountain snow and high winds are possible before the next system arrives on Friday. The same system will evolve into a major storm on Thursday across the southern Plains for a widespread rain event for the South and East. Read More >

Hazardous Weather Conditions

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Current conditions at

MAMMOTH AT YELLOWSTONE NP (YLAW4)

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

24°F

-4°C

Humidity	76%
Wind Speed	SSW 13 G 19 MPH
Barometer	NA
Dewpoint	17°F (-8°C)
Visibility	NA
Wind Chill	12°F (-11°C)
Last update	12 Dec 12:15 am MST

More Information:

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

Extended Forecast for

8 Miles W Mammoth Hot Springs WY

Winter Weather Advisory until December 12, 05:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Weather Advisory until December 12, 05:00pm

NOW until
5:00pm Wed

Winter Weather Advisory
Overnight

Snow and
Blowing Snow
Low: 11 °F
Wednesday

Snow and
Areas Blowing
Snow
High: 17 °F
Wednesday
Night

Slight Chance
Snow and
Patchy
Blowing Snow
Low: 3 °F
Thursday

Mostly Cloudy
and Breezy
High: 15 °F
Thursday
Night

Partly Cloudy
and Breezy
Low: 10 °F
Friday

Mostly Sunny
and Breezy
High: 24 °F
Friday
Night

Chance Snow
Showers and
Breezy
Low: 14 °F
Saturday

Breezy.
Slight Chance
Snow Showers
then Partly
Sunny
High: 20 °F

Detailed Forecast

Overnight

Snow. Widespread blowing snow, mainly before 5am. Low around 11. Wind chill values as low as -10. Windy, with a southwest wind 29 to 31 mph, with gusts as high as 47 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of 3 to 5 inches possible.

Wednesday

Snow. Areas of blowing snow. Areas of freezing fog between 8am and 9am. High near 17. Wind chill values as low as -15. Blustery, with a west northwest wind 18 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Wednesday Night

A 10 percent chance of snow after 11pm. Patchy blowing snow before 9pm. Partly cloudy, with a low around 3. Wind chill values as low as -20. Blustery, with a west southwest wind 14 to 21 mph, with gusts as high as 31 mph.

Thursday

Mostly cloudy, with a high near 15. Wind chill values as low as -15. Breezy, with a west southwest wind around 18 mph, with gusts as high as 28 mph.

Thursday Night

Partly cloudy, with a low around 10. Breezy, with a southwest wind around 16 mph, with gusts as high as 24 mph.

Friday

Mostly sunny, with a high near 24. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph.

Friday Night

A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 14. Breezy, with a south southwest wind around 21 mph, with gusts as high as 31 mph.

Saturday

A 20 percent chance of snow showers before 11am. Partly sunny, with a high near 20. Breezy.

Saturday Night

Mostly cloudy, with a low around 13. Breezy.

Sunday

Mostly sunny, with a high near 25. Breezy.

Sunday Night

Partly cloudy, with a low around 16. Breezy.

Monday

Mostly sunny, with a high near 24. Breezy.

Monday Night

Mostly cloudy, with a low around 16.