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

Heavy Great Lakes Snow through Friday; Extreme Cold and Potential for Major Winter Storm Late Week into this Weekend

Multiple clipper systems will bring cold temperatures and enhance lake-effect snow downwind of the Great Lakes. An arctic blast will bring frigid temperatures accompanied with gusty winds that may lead to dangerous wind chills beginning in the Northern Plains Thursday before expanding to the South and East. An expansive winter storm will start Friday in the Southern Rockies/Plains and Mid-South. Read More >

Hazardous Weather Conditions

Current conditions at

Yellowstone Lake (KP60)

Lat: 44.54444°NLon: 110.42111°WElev: 7835.0ft.

NA

-5°F

-21°C

Humidity 82%
Wind Speed WNW 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint -9°F (-23°C)
Visibility NA
Wind Chill-15°F (-26°C)
Last update 21 Jan 02:56 AM MST
Extended Forecast for

West Thumb WY

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around -3. Wind chill values as low as -10. Light southwest wind.

    Low: -3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Wind chill values as low as -10. Calm wind becoming west southwest 5 to 8 mph in the afternoon.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 1. Light southwest wind.

    Low: 1 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 23. Light west wind.

    High: 23 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -2. Calm wind.

    Low: -2 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of snow showers after 11am. Mostly sunny, with a high near 17. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 17 °F

    Slight Chance
    Snow Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around -13. Light and variable wind.

    Low: -13 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 16.

    High: 16 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -7.

    Low: -7 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around -3. Wind chill values as low as -10. Light southwest wind.
Wednesday
Mostly sunny, with a high near 23. Wind chill values as low as -10. Calm wind becoming west southwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 1. Light southwest wind.
Thursday
Partly sunny, with a high near 23. Light west wind.
Thursday Night
Mostly cloudy, with a low around -2. Calm wind.
Friday
A 20 percent chance of snow showers after 11am. Mostly sunny, with a high near 17. Calm wind becoming north northwest around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around -13. Light and variable wind.
Saturday
Mostly sunny, with a high near 16.
Saturday Night
Partly cloudy, with a low around -7.
Sunday
Mostly sunny, with a high near 18.
Sunday Night
Partly cloudy, with a low around -4.
Monday
A slight chance of snow showers. Mostly sunny, with a high near 23.
Monday Night
A slight chance of snow showers. Partly cloudy, with a low around 5.
Tuesday
A slight chance of snow showers. Partly sunny, with a high near 26.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
West Thumb WY
 44.41°N 110.57°W (Elev. 7776 ft)
Last Update:
2:17 am MST Jan 21, 2026
Forecast Valid:
3am MST Jan 21, 2026-6pm MST Jan 27, 2026
 
Forecast Discussion
 
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