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

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

31°F

-1°C

Humidity	100%
Wind Speed	SW 1 MPH
Barometer	NA
Dewpoint	31°F (-1°C)
Visibility	NA
Last update	01 Apr 04:15 AM MDT

More Information:

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

Extended Forecast for

Mammoth Hot Springs WY

Winter Storm Watch April 1, 11:00pm until April 3, 06:00pm

Click here for hazard details and duration

Winter Storm Watch

Overnight
Low: 38 °F
Chance
Showers
Wednesday
High: 52 °F
Chance
Rain/Snow
then Showers
Wednesday Night
Low: 39 °F
Rain/Snow
Thursday
High: 45 °F
Rain/Snow
then Snow
Showers and
Breezy
Thursday Night
Low: 29 °F
Snow Showers
Friday
High: 43 °F
Snow Showers
Likely
Friday Night
Low: 26 °F
Partly Cloudy
Saturday
High: 53 °F
Sunny
Saturday Night
Low: 29 °F
Mostly Clear

Detailed Forecast

Overnight

A 30 percent chance of showers. Mostly cloudy, with a steady temperature around 38. Light east southeast wind.

Wednesday

A chance of rain and snow showers before 2pm, then rain showers. Some thunder is also possible. High near 52. Light and variable wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night

Rain and snow showers, mainly before 5am. Snow level 7800 feet lowering to 6600 feet after midnight . Low around 39. Southeast wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday

Rain and snow showers, becoming all snow after noon. Some thunder is also possible. High near 45. Breezy, with a south wind 10 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

Thursday Night

Snow showers. Low around 29. West northwest wind 8 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday

Snow showers likely, mainly before noon. Mostly cloudy, with a high near 43. Northwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

Friday Night

Partly cloudy, with a low around 26. Northwest wind 5 to 9 mph becoming light and variable. Winds could gust as high as 21 mph.

Saturday

Sunny, with a high near 53.

Saturday Night

Mostly clear, with a low around 29.

Sunday

Sunny, with a high near 58.

Sunday Night

Partly cloudy, with a low around 34.

Monday

Mostly sunny, with a high near 61.