Hazardous Coastal Conditions for the Mid-Atlantic; Storm System Approaching Southern Alaska

A Nor'easter will create hazardous marine and coastal conditions along the Mid-Atlantic coast through mid-week, with significant coastal flooding and beach erosion possible. Meanwhile, another strong storm system is forecast to bring high winds and heavy precipitation to portions of southern Alaska. Elsewhere, relatively benign weather is expected through the first half of the work week. Read More >

Current conditions at

MAMMOTH AT YELLOWSTONE NATIONAL PARK (YLAW4)

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

NA

42°F

6°C

Humidity 48%
Wind Speed SSW 5 MPH
Barometer NA
Dewpoint 23°F (-5°C)
Visibility NA
Wind Chill39°F (4°C)
Last update 19 Oct 12:15 AM MDT
Extended Forecast for

Mammoth WY

  • Overnight

    Overnight: Mostly clear, with a low around 33. East southeast wind 8 to 10 mph.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61. South wind 7 to 13 mph.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 36. South wind 6 to 10 mph.

    Low: 36 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60. South southeast wind 3 to 6 mph.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 37. Calm wind becoming south around 5 mph in the evening.

    Low: 37 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 62. Southeast wind 5 to 8 mph becoming south southwest in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. Light and variable wind becoming south 5 to 7 mph in the evening.

    Low: 39 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers after noon.  Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers.  Low around 37. Chance of precipitation is 90%.

    Low: 37 °F

    Showers
    Likely then
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 33. East southeast wind 8 to 10 mph.
Monday
Sunny, with a high near 61. South wind 7 to 13 mph.
Monday Night
Increasing clouds, with a low around 36. South wind 6 to 10 mph.
Tuesday
Mostly sunny, with a high near 60. South southeast wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 37. Calm wind becoming south around 5 mph in the evening.
Wednesday
Mostly sunny, with a high near 62. Southeast wind 5 to 8 mph becoming south southwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 39. Light and variable wind becoming south 5 to 7 mph in the evening.
Thursday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 61.
Thursday Night
Showers. Low around 37. Chance of precipitation is 90%.
Friday
Rain, possibly mixed with snow showers. High near 43. Chance of precipitation is 100%.
Friday Night
Rain and snow showers likely. Snow level 7200 feet lowering to 5700 feet after midnight . Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
A slight chance of rain and snow showers. Snow level 5800 feet rising to 7500 feet in the afternoon. Mostly sunny, with a high near 50.
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ABOUT THIS FORECAST

 
Point Forecast:
Mammoth WY
 44.98°N 110.69°W (Elev. 5745 ft)
12:01 am MDT Oct 19, 2026
1am MDT Oct 19, 2026-6pm MDT Oct 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database