Severe Thunderstorms and Heavy Rainfall in the Ohio Valley and Great Lakes; Winter Weather in the Northern Tier

A slow moving front extending from the Great Lakes region into the Plains will bring snow, wintry mix, and ice accumulation north of the front from the Upper Midwest into New England, and severe weather and heavy rain south of the front. Scattered severe thunderstorms with damaging gusts, severe hail, and heavy rain are expected across parts of the Great Lakes/Midwest through tonight. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

24°F

-4°C

Humidity	95%
Wind Speed	NNW 2 MPH
Barometer	NA
Dewpoint	22°F (-6°C)
Visibility	NA
Last update	31 Mar 09:15 AM MDT

More Information:

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

Extended Forecast for

Mammoth WY

Today
High: 50 °F
Scattered
Showers
Tonight
Low: 39 °F
Rain/Snow
Likely
Wednesday
High: 52 °F
Scattered
Rain/Snow
then Showers
Likely
Wednesday Night
Low: 39 °F
Showers
Thursday
High: 45 °F
Rain/Snow
then Snow
Showers and
Breezy
Thursday Night
Low: 29 °F
Snow Showers
Friday
High: 42 °F
Snow Showers
Likely
Friday Night
Low: 26 °F
Slight Chance
Snow Showers
then Partly
Cloudy
Saturday
High: 51 °F
Sunny

Detailed Forecast

Today

Scattered showers and thunderstorms, mainly after 11am. Partly sunny, with a high near 50. Northwest wind 8 to 14 mph becoming south southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Rain and snow showers likely before 3am, then rain showers likely between 3am and 4am, then scattered rain and snow showers after 4am. Some thunder is also possible. Snow level 8300 feet lowering to 6700 feet after midnight . Cloudy, with a low around 39. Southwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Wednesday

Scattered rain and snow showers before 10am, then rain showers likely. Some thunder is also possible. Snow level 6500 feet rising to 7700 feet in the afternoon. Partly sunny, with a high near 52. Light and variable wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

Wednesday Night

Showers and possibly a thunderstorm. Low around 39. South wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday

Rain and snow showers, becoming all snow after noon. Some thunder is also possible. High near 45. Breezy, with a south southwest wind 10 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow showers. Low around 29. Southwest wind 7 to 14 mph becoming west northwest after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

Friday

Snow showers likely, mainly before noon. Mostly cloudy, with a high near 42. Northwest wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Friday Night

A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 26.

Saturday

Sunny, with a high near 51.

Saturday Night

Mostly clear, with a low around 30.

Sunday

Sunny, with a high near 56.

Sunday Night

Partly cloudy, with a low around 33.

Monday

Mostly sunny, with a high near 60.