Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

28°F

-2°C

Humidity 48%
Wind Speed S 2 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Last update 19 Jan 01:15 PM MST
Extended Forecast for

Mammoth WY

  • M.L.King Day

    M.L.King Day: Sunny, with a high near 34. East southeast wind around 6 mph becoming southwest.

    High: 34 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 18. South wind 6 to 8 mph.

    Low: 18 °F

    Mostly Clear

  • Tuesday

    Tuesday: Scattered snow showers between 8am and 1pm.  Mostly cloudy, then gradually becoming sunny, with a high near 31. South southeast wind 5 to 13 mph becoming north northwest in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 30%.

    High: 31 °F

    Scattered
    Snow Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 13. South wind around 6 mph.

    Low: 13 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 32. South southwest wind 3 to 5 mph.

    High: 32 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 13. South wind around 6 mph.

    Low: 13 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33. South wind around 5 mph becoming light and variable  in the morning.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

Detailed Forecast

M.L.King Day
Sunny, with a high near 34. East southeast wind around 6 mph becoming southwest.
Tonight
Mostly clear, with a low around 18. South wind 6 to 8 mph.
Tuesday
Scattered snow showers between 8am and 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 31. South southeast wind 5 to 13 mph becoming north northwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 13. South wind around 6 mph.
Wednesday
Mostly sunny, with a high near 32. South southwest wind 3 to 5 mph.
Wednesday Night
Partly cloudy, with a low around 13. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 33. South wind around 5 mph becoming light and variable in the morning.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Mostly sunny, with a high near 28.
Friday Night
Mostly clear, with a low around 8.
Saturday
Sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 13.
Sunday
Mostly sunny, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
1:29 pm MST Jan 19, 2026
2pm MST Jan 19, 2026-6pm MST Jan 25, 2026
 
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Additional Resources

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