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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

24°F

-4°C

Humidity 49%
Wind Speed SSW 3 MPH
Barometer NA
Dewpoint 8°F (-13°C)
Visibility NA
Last update 26 Jan 10:15 PM MST
Extended Forecast for

5 Miles SSW Mammoth Hot Springs WY

  • Tonight

    Tonight: Mostly cloudy, with a low around 7. Wind chill values as low as zero. South southwest wind around 7 mph.

    Low: 7 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 28. Wind chill values as low as -5. Southwest wind around 7 mph.

    High: 28 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 9. Wind chill values as low as zero. South wind around 8 mph.

    Low: 9 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 27. Wind chill values as low as -5. South wind around 7 mph.

    High: 27 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 12. Southwest wind around 6 mph.

    Low: 12 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 28. Southwest wind around 7 mph.

    High: 28 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 15. South southwest wind around 7 mph.

    Low: 15 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 30.

    High: 30 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday 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

Tonight
Mostly cloudy, with a low around 7. Wind chill values as low as zero. South southwest wind around 7 mph.
Tuesday
Sunny, with a high near 28. Wind chill values as low as -5. Southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a low around 9. Wind chill values as low as zero. South wind around 8 mph.
Wednesday
Partly sunny, with a high near 27. Wind chill values as low as -5. South wind around 7 mph.
Wednesday Night
Mostly cloudy, with a low around 12. Southwest wind around 6 mph.
Thursday
Partly sunny, with a high near 28. Southwest wind around 7 mph.
Thursday Night
Mostly cloudy, with a low around 15. South southwest wind around 7 mph.
Friday
A 20 percent chance of snow showers after 11am. Mostly cloudy, with a high near 30.
Friday Night
A 20 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 18.
Sunday
Partly sunny, with a high near 37.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
A slight chance of snow showers. Partly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Mammoth Hot Springs WY
 44.89°N 110.74°W (Elev. 7402 ft)
Last Update:
10:47 pm MST Jan 26, 2026
Forecast Valid:
11pm MST Jan 26, 2026-6pm MST Feb 2, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation