National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

32°F

0°C

Humidity 100%
Wind Speed SE 2 MPH
Barometer NA
Dewpoint 32°F (0°C)
Visibility NA
Last update 01 Apr 05:15 AM MDT
Extended Forecast for

Mammoth WY

Winter Storm Watch April 1, 11:00pm until April 3, 06:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Today

    Today: 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.

    High: 52 °F

    Chance
    Rain/Snow
    then Showers

  • Tonight

    Tonight: 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.

    Low: 39 °F

    Rain/Snow

  • Thursday

    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.

    High: 45 °F

    Rain/Snow
    then Snow
    Showers and
    Breezy

  • Thursday Night

    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.

    Low: 29 °F

    Snow Showers

  • Friday

    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%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Snow Showers
    Likely

  • Friday Night

    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.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 53. South wind 5 to 7 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

Detailed Forecast

Today
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.
Tonight
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%. New snow accumulation of less than a half inch possible.
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. South wind 5 to 7 mph.
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.
Monday Night
Partly cloudy, with a low around 37.
Tuesday
Sunny, with a high near 63.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
5:47 am MDT Apr 1, 2026
Forecast Valid:
6am MDT Apr 1, 2026-6pm MDT Apr 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation