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 >

Hazardous Weather Conditions

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

21°F

-6°C

Humidity 68%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 12°F (-11°C)
Visibility NA
Last update 20 Jan 05:15 AM MST
Extended Forecast for

17 Miles W Gardiner MT

  • Today

    Today: A slight chance of snow showers between 10am and 1pm.  Cloudy, then gradual clearing during the afternoon, with a high near 16. Wind chill values as low as -5. Breezy, with a southwest wind 10 to 18 mph becoming north northwest in the morning. Winds could gust as high as 28 mph.  Chance of precipitation is 20%.

    High: 16 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 6. Wind chill values as low as -10. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph.

    Low: 6 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 20. Wind chill values as low as -10. West southwest wind 7 to 11 mph.

    High: 20 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 5. Wind chill values as low as -5. Southwest wind around 10 mph.

    Low: 5 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 19. Southwest wind 7 to 9 mph becoming northwest in the afternoon.

    High: 19 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 4. Northwest wind around 8 mph becoming southwest after midnight.

    Low: 4 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 13. West southwest wind around 9 mph becoming north northwest in the afternoon.

    High: 13 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around -1.

    Low: -1 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 15.

    High: 15 °F

    Sunny

Detailed Forecast

Today
A slight chance of snow showers between 10am and 1pm. Cloudy, then gradual clearing during the afternoon, with a high near 16. Wind chill values as low as -5. Breezy, with a southwest wind 10 to 18 mph becoming north northwest in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 6. Wind chill values as low as -10. South wind 9 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph.
Wednesday
Mostly sunny, with a high near 20. Wind chill values as low as -10. West southwest wind 7 to 11 mph.
Wednesday Night
Partly cloudy, with a low around 5. Wind chill values as low as -5. Southwest wind around 10 mph.
Thursday
Mostly sunny, with a high near 19. Southwest wind 7 to 9 mph becoming northwest in the afternoon.
Thursday Night
Partly cloudy, with a low around 4. Northwest wind around 8 mph becoming southwest after midnight.
Friday
Mostly sunny, with a high near 13. West southwest wind around 9 mph becoming north northwest in the afternoon.
Friday Night
Mostly clear, with a low around -1.
Saturday
Sunny, with a high near 15.
Saturday Night
Partly cloudy, with a low around 4.
Sunday
Mostly sunny, with a high near 19. Breezy.
Sunday Night
A slight chance of snow showers. Mostly cloudy, with a low around 11. Breezy.
Monday
A slight chance of snow showers. Partly sunny, with a high near 21. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
17 Miles W Gardiner MT
 45.08°N 111.07°W (Elev. 9426 ft)
5:18 am MST Jan 20, 2026
5am MST Jan 20, 2026-6pm MST Jan 26, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database