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

Lake Effect Snow through Saturday: A Series of Storms Impact the West

Lake effect snow showers will continue through Saturday downwind of Lakes Erie, Ontario and the eastern portion of Lake Superior. A series of storm systems will continue to impact California and the Pacific Northwest through the weekend and into next week, bringing widespread rainfall, mountain snowfall, and gusty winds. Coastal flooding is expected in northern California. Read More >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

35°F

2°C

Humidity 70%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 02 Jan 03:15 AM MST
Extended Forecast for

3 Miles SSW Mammoth Hot Springs WY

  • Overnight

    Overnight: Snow showers likely, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 27. South wind 6 to 8 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 27 °F

    Snow Showers
    Likely and
    Patchy Fog

  • Friday

    Friday: A 50 percent chance of snow showers, mainly after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 34. South wind 6 to 13 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

    High: 34 °F

    Chance Snow
    Showers and
    Patchy Fog

  • Friday Night

    Friday Night: A 40 percent chance of snow showers. Patchy fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 28. South southwest wind 10 to 13 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.

    Low: 28 °F

    Chance Snow
    Showers and
    Patchy Fog

  • Saturday

    Saturday: Partly sunny, with a high near 37. South southwest wind 10 to 14 mph, with gusts as high as 29 mph.

    High: 37 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 29. Breezy, with a south wind around 15 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance Snow
    Showers and
    Breezy

  • Sunday

    Sunday: Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 34. Breezy, with a south southwest wind 15 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.

    High: 34 °F

    Snow Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A 40 percent chance of snow showers. Mostly cloudy, with a low around 25. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 31 mph.

    Low: 25 °F

    Chance Snow
    Showers and
    Breezy

  • Monday

    Monday: A 50 percent chance of snow showers. Mostly cloudy, with a high near 31. Breezy.

    High: 31 °F

    Chance Snow
    Showers and
    Breezy

  • Monday Night

    Monday Night: A 20 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 20.

    Low: 20 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

Detailed Forecast

Overnight
Snow showers likely, mainly before 4am. Patchy fog. Otherwise, cloudy, with a low around 27. South wind 6 to 8 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Friday
A 50 percent chance of snow showers, mainly after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 34. South wind 6 to 13 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.
Friday Night
A 40 percent chance of snow showers. Patchy fog between 11pm and 3am. Otherwise, mostly cloudy, with a low around 28. South southwest wind 10 to 13 mph, with gusts as high as 26 mph. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 37. South southwest wind 10 to 14 mph, with gusts as high as 29 mph.
Saturday Night
A 40 percent chance of snow showers, mainly after 11pm. Mostly cloudy, with a low around 29. Breezy, with a south wind around 15 mph, with gusts as high as 28 mph. New snow accumulation of less than a half inch possible.
Sunday
Snow showers likely, mainly after 11am. Mostly cloudy, with a high near 34. Breezy, with a south southwest wind 15 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
Sunday Night
A 40 percent chance of snow showers. Mostly cloudy, with a low around 25. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 31 mph.
Monday
A 50 percent chance of snow showers. Mostly cloudy, with a high near 31. Breezy.
Monday Night
A 20 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 20.
Tuesday
A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 27. Breezy.
Tuesday Night
A slight chance of snow showers. Mostly cloudy, with a low around 21. Breezy.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 27. Breezy.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 13.
Thursday
A chance of snow showers. Partly sunny, with a high near 24.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mammoth Hot Springs WY
 44.94°N 110.74°W (Elev. 7402 ft)
Last Update:
2:31 am MST Jan 2, 2026
Forecast Valid:
3am MST Jan 2, 2026-6pm MST Jan 8, 2026
 
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Additional Resources

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