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

Rapid Warm-Up Forecast Across Much of the Lower 48 Today and Tuesday

Most of the U.S. starts the week calm and unseasonably warm. The Heartland will be warmest, with highs 25–30° above average. Only the Gulf Coast stays chilly. Rain today is limited to western Washington while lake effect snow continues east of Lake Ontario. Cooler air returns after Tuesday, bringing a wintry mix to the Midwest and Northeast by Wednesday. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

30°F

-1°C

Humidity 56%
Wind Speed S 4 MPH
Barometer NA
Dewpoint 16°F (-9°C)
Visibility NA
Wind Chill26°F (-3°C)
Last update 12 Jan 09:15 AM MST
Extended Forecast for

Mammoth Hot Springs WY

  • Today

    Today: Mostly sunny, with a high near 41. South wind around 7 mph.

    High: 41 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 26. South wind around 7 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43. Southwest wind around 6 mph.

    High: 43 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25. South wind 3 to 5 mph.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 45. Light south wind.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. South southwest wind around 6 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 44. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 44 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 41. South wind around 7 mph.
Tonight
Partly cloudy, with a low around 26. South wind around 7 mph.
Tuesday
Mostly sunny, with a high near 43. Southwest wind around 6 mph.
Tuesday Night
Partly cloudy, with a low around 25. South wind 3 to 5 mph.
Wednesday
Sunny, with a high near 45. Light south wind.
Wednesday Night
Mostly clear, with a low around 20. South southwest wind around 6 mph.
Thursday
Sunny, with a high near 44. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 15.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 17.
Saturday
Sunny, with a high near 42.
Saturday Night
Mostly clear, with a low around 18.
Sunday
Sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.98°N 110.69°W (Elev. 5745 ft)
Last Update:
9:17 am MST Jan 12, 2026
Forecast Valid:
9am MST Jan 12, 2026-6pm MST Jan 18, 2026
 
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Additional Resources

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