Major Winter Storm Ongoing in the Upper Midwest; Severe Weather Tonight from the Mid-South to the Ohio Valley

A major winter storm will continue to bring blizzard conditions, heavy snowfall, icing, and strong winds through Monday across the Upper Midwest and Upper Great Lakes. A line of storms will be capable of producing widespread damaging winds, tornadoes, and some large hail from the Mid-South to the Ohio Valley and the Southeast through tonight, moving into the Mid-Atlantic Monday. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

22°F

-6°C

Humidity 84%
Wind Speed NNE 0 MPH
Barometer NA
Dewpoint 18°F (-8°C)
Visibility NA
Last update 16 Mar 05:15 AM MDT
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Snow showers.  Steady temperature around 26. Light south southeast wind.  Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 26 °F

    Snow Showers

  • Monday

    Monday: Snow showers before 1pm, then a chance of rain and snow showers between 1pm and 3pm, then a chance of rain showers after 3pm.  High near 43. Calm wind becoming south southeast around 6 mph in the afternoon.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Snow Showers
    then Chance
    Rain/Snow

  • Monday Night

    Monday Night: Showers, mainly before 11pm.  Snow level 7100 feet lowering to 6600 feet after midnight . Low around 37. South wind 5 to 7 mph.  Chance of precipitation is 80%.

    Low: 37 °F

    Showers then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. Southwest wind 8 to 11 mph, with gusts as high as 26 mph.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow showers. Steady temperature around 26. Light south southeast wind. Chance of precipitation is 80%. Total nighttime snow accumulation of less than a half inch possible.
Monday
Snow showers before 1pm, then a chance of rain and snow showers between 1pm and 3pm, then a chance of rain showers after 3pm. High near 43. Calm wind becoming south southeast around 6 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday Night
Showers, mainly before 11pm. Snow level 7100 feet lowering to 6600 feet after midnight . Low around 37. South wind 5 to 7 mph. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 56. Southwest wind 6 to 10 mph, with gusts as high as 22 mph.
Tuesday Night
Mostly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 22 mph.
Wednesday
Mostly sunny, with a high near 62. Southwest wind 8 to 11 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 39. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 67.
Friday Night
Partly cloudy, with a low around 42.
Saturday
A slight chance of showers. Mostly sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 57.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
5:47 am MDT Mar 16, 2026
5am MDT Mar 16, 2026-6pm MDT Mar 22, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database