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

23°F

-5°C

Humidity 72%
Wind Speed W 2 MPH
Barometer NA
Dewpoint 15°F (-9°C)
Visibility NA
Last update 18 Jan 10:15 PM MST
Extended Forecast for

16 Miles W Gardiner MT

  • Tonight

    Tonight: Patchy fog before midnight.  Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 5. Wind chill values as low as zero. North northwest wind 5 to 8 mph.

    Low: 5 °F

    Patchy Fog
    then Partly
    Cloudy

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 25. Wind chill values as low as -5. West wind 7 to 9 mph.

    High: 25 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Wind chill values as low as zero. South southwest wind 6 to 8 mph.

    Low: 9 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow showers.  Partly sunny, with a high near 20. Wind chill values as low as zero. Southwest wind around 8 mph becoming west northwest in the afternoon.

    High: 20 °F

    Slight Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 6. Southwest wind 5 to 7 mph.

    Low: 6 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 20. West northwest wind 5 to 7 mph.

    High: 20 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 6 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of snow showers after 11pm.  Mostly cloudy, with a low around 9.

    Low: 9 °F

    Slight Chance
    Snow Showers

Detailed Forecast

Tonight
Patchy fog before midnight. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 5. Wind chill values as low as zero. North northwest wind 5 to 8 mph.
M.L.King Day
Increasing clouds, with a high near 25. Wind chill values as low as -5. West wind 7 to 9 mph.
Monday Night
Mostly cloudy, with a low around 9. Wind chill values as low as zero. South southwest wind 6 to 8 mph.
Tuesday
A 20 percent chance of snow showers. Partly sunny, with a high near 20. Wind chill values as low as zero. Southwest wind around 8 mph becoming west northwest in the afternoon.
Tuesday Night
Partly cloudy, with a low around 6. Southwest wind 5 to 7 mph.
Wednesday
Mostly sunny, with a high near 20. West northwest wind 5 to 7 mph.
Wednesday Night
Partly cloudy, with a low around 6. South southwest wind around 6 mph.
Thursday
Partly sunny, with a high near 23.
Thursday Night
A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around 9.
Friday
A 30 percent chance of snow showers. Partly sunny, with a high near 19.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 5.
Saturday
A chance of snow showers. Partly sunny, with a high near 18.
Saturday Night
A slight chance of snow showers. Mostly cloudy, with a low around 7.
Sunday
A chance of snow showers. Partly sunny, with a high near 21.
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ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W Gardiner MT
 45.06°N 111.04°W (Elev. 8474 ft)
9:03 pm MST Jan 18, 2026
10pm MST Jan 18, 2026-6pm MST Jan 25, 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