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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. 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 100%
Wind Speed NW 0 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Last update 13 Oct 01:15 AM MDT
Extended Forecast for

Mammoth Hot Springs WY

  • Overnight

    Overnight: Cloudy, with a low around 30. North wind 3 to 6 mph.

    Low: 30 °F

    Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 50. Light north wind becoming northwest 5 to 10 mph in the morning.

    High: 50 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. North northwest wind 5 to 9 mph becoming calm after midnight.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 55. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 55 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 29. North northwest wind 5 to 8 mph.

    Low: 29 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 58. North northwest wind around 5 mph becoming calm in the morning.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 30. Calm wind becoming south southeast 5 to 7 mph after midnight.

    Low: 30 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Clear, with a low around 32.

    Low: 32 °F

    Clear

Detailed Forecast

Overnight
Cloudy, with a low around 30. North wind 3 to 6 mph.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 50. Light north wind becoming northwest 5 to 10 mph in the morning.
Tuesday Night
Mostly clear, with a low around 26. North northwest wind 5 to 9 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 55. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 29. North northwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 58. North northwest wind around 5 mph becoming calm in the morning.
Thursday Night
Clear, with a low around 30. Calm wind becoming south southeast 5 to 7 mph after midnight.
Friday
Sunny, with a high near 63.
Friday Night
Clear, with a low around 32.
Saturday
Sunny, with a high near 63.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Sunny, with a high near 63.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mammoth Hot Springs WY
 44.96°N 110.69°W (Elev. 6106 ft)
Last Update:
12:31 am MDT Oct 13, 2026
Forecast Valid:
1am MDT Oct 13, 2026-6pm MDT Oct 19, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation