Inclement Weather in the Pacific Northwest; Severe Thunderstorms in the Southeast; Impending Winter Storm

An approaching storm will bring rain and high elevation snow to Pacific Northwest through the weekend. Isolated severe thunderstorms are possible across parts of the Southeast today into this evening as a low strengthens over the Southeast. This system will form into a winter storm on Sunday that will bring heavy snow, high winds, and coastal flooding to the Mid-Atlantic and Northeast into Monday. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

19°F

-7°C

Humidity 67%
Wind Speed S 6 MPH
Barometer NA
Dewpoint 10°F (-12°C)
Visibility NA
Wind Chill11°F (-12°C)
Last update 22 Feb 02:15 AM MST
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Mostly cloudy, with a low around 16. South southeast wind around 8 mph.

    Low: 16 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy through mid morning, then gradual clearing, with a high near 39. Breezy, with a southeast wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 39 °F

    Partly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 22. South wind around 9 mph.

    Low: 22 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 44. Breezy, with a south southwest wind 8 to 15 mph, with gusts as high as 33 mph.

    High: 44 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: A 30 percent chance of snow showers after 11pm.  Mostly cloudy, with a low around 33. South southwest wind 11 to 14 mph, with gusts as high as 30 mph.  New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: Snow showers before 2pm, then rain, possibly mixed with snow showers between 2pm and 5pm, then rain showers after 5pm.  High near 41. Southwest wind 10 to 13 mph, with gusts as high as 29 mph.  Chance of precipitation is 80%.

    High: 41 °F

    Snow Showers
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain showers before 8pm, then rain, possibly mixed with snow showers between 8pm and 2am, then rain showers after 2am.  Snow level 6400 feet. Low around 32. Southwest wind around 14 mph, with gusts as high as 26 mph.  Chance of precipitation is 80%.

    Low: 32 °F

    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow showers likely before 11am, then a chance of snow showers.  Mostly sunny, with a high near 40. Breezy.  Chance of precipitation is 70%.

    High: 40 °F

    Breezy.
    Rain/Snow
    Likely then
    Chance Snow
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 22. Breezy.

    Low: 22 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 16. South southeast wind around 8 mph.
Sunday
Mostly cloudy through mid morning, then gradual clearing, with a high near 39. Breezy, with a southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Partly cloudy, with a low around 22. South wind around 9 mph.
Monday
Mostly sunny, with a high near 44. Breezy, with a south southwest wind 8 to 15 mph, with gusts as high as 33 mph.
Monday Night
A 30 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 33. South southwest wind 11 to 14 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
Tuesday
Snow showers before 2pm, then rain, possibly mixed with snow showers between 2pm and 5pm, then rain showers after 5pm. High near 41. Southwest wind 10 to 13 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
Tuesday Night
Rain showers before 8pm, then rain, possibly mixed with snow showers between 8pm and 2am, then rain showers after 2am. Snow level 6400 feet. Low around 32. Southwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Wednesday
Rain and snow showers likely before 11am, then a chance of snow showers. Mostly sunny, with a high near 40. Breezy. Chance of precipitation is 70%.
Wednesday Night
Mostly clear, with a low around 22. Breezy.
Thursday
Mostly sunny, with a high near 40. Breezy.
Thursday Night
Mostly clear, with a low around 26. Breezy.
Friday
A slight chance of snow showers. Mostly sunny, with a high near 43. Breezy.
Friday Night
A chance of snow showers. Partly cloudy, with a low around 24. Breezy.
Saturday
A chance of snow showers. Mostly sunny, with a high near 41. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
2:32 am MST Feb 22, 2026
3am MST Feb 22, 2026-6pm MST Feb 28, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database