Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

BIG SHEEP MOUNTAIN (LCFM8)

Lat: 47.02819°NLon: 105.80472°WElev: 3172.0ft.

NA

18°F

-8°C

Humidity 80%
Wind Speed SSE 3 MPH
Barometer NA
Dewpoint 13°F (-11°C)
Visibility NA
Last update 19 Jan 10:08 PM MST
Extended Forecast for

11 Miles NE Rock Springs MT

Winter Weather Advisory January 20, 02:00am until January 20, 05:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Tonight

    Tonight: A 30 percent chance of snow, mainly after 5am.  Cloudy, with a low around 16. South wind 3 to 6 mph.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 16 °F

    Cloudy then
    Chance Snow

  • Tuesday

    Tuesday: Snow likely, mainly before 10am.  Patchy blowing snow after 9am. Cloudy, with a high near 26. Blustery, with a northwest wind 13 to 18 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 39 mph.  Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    High: 26 °F

    Snow Likely
    and Patchy
    Blowing Snow

  • Tuesday Night

    Tuesday Night: Patchy blowing snow after 2am. Increasing clouds, with a low around 14. Wind chill values between zero and 10. West wind 11 to 20 mph, with gusts as high as 33 mph.

    Low: 14 °F

    Mostly Cloudy
    then Patchy
    Blowing Snow

  • Wednesday

    Wednesday: Patchy blowing snow. Cloudy through mid morning, then gradual clearing, with a high near 27. Wind chill values between zero and 5. Blustery, with a northwest wind 22 to 26 mph, with gusts as high as 41 mph.

    High: 27 °F

    Patchy
    Blowing Snow
    and Blustery

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 5. West northwest wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 5 °F

    Partly Cloudy

  • Thursday

    Thursday: Cloudy, with a high near 13. North northwest wind 8 to 10 mph.

    High: 13 °F

    Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -10. East northeast wind 6 to 9 mph.

    Low: -10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 7. East northeast wind around 6 mph becoming west in the afternoon.

    High: 7 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -4. East wind around 6 mph becoming south southwest after midnight.

    Low: -4 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly after 5am. Cloudy, with a low around 16. South wind 3 to 6 mph. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
Snow likely, mainly before 10am. Patchy blowing snow after 9am. Cloudy, with a high near 26. Blustery, with a northwest wind 13 to 18 mph increasing to 23 to 28 mph in the morning. Winds could gust as high as 39 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday Night
Patchy blowing snow after 2am. Increasing clouds, with a low around 14. Wind chill values between zero and 10. West wind 11 to 20 mph, with gusts as high as 33 mph.
Wednesday
Patchy blowing snow. Cloudy through mid morning, then gradual clearing, with a high near 27. Wind chill values between zero and 5. Blustery, with a northwest wind 22 to 26 mph, with gusts as high as 41 mph.
Wednesday Night
Partly cloudy, with a low around 5. West northwest wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday
Cloudy, with a high near 13. North northwest wind 8 to 10 mph.
Thursday Night
Mostly cloudy, with a low around -10. East northeast wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 7. East northeast wind around 6 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around -4. East wind around 6 mph becoming south southwest after midnight.
Saturday
Mostly sunny, with a high near 20. West northwest wind 6 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 5. West wind around 7 mph becoming south southwest in the evening.
Sunday
Partly sunny, with a high near 29.
Sunday Night
Mostly cloudy, with a low around 13.
Monday
A slight chance of snow. Mostly cloudy, with a high near 33.
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ABOUT THIS FORECAST

 
Point Forecast:
11 Miles NE Rock Springs MT
 46.9°N 106.06°W (Elev. 2799 ft)
1:32 pm MST Jan 19, 2026
10pm MST Jan 19, 2026-6pm MST Jan 26, 2026
 
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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