Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

Hazardous Weather Conditions

Current conditions at

Plattsburgh International Airport (KPBG)

Lat: 44.65°NLon: 73.47°WElev: 236ft.

Fair

-9°F

-23°C

Humidity 82%
Wind Speed Calm
Barometer 30.22 in (1024.1 mb)
Dewpoint -13°F (-25°C)
Visibility 10.00 mi
Last update 9 Dec 5:53 am EST
Extended Forecast for

3 Miles SSE Lyon Mountain NY

  • Today

    Today: Partly sunny, with a high near 15. Wind chill values as low as -33. West wind 8 to 16 mph becoming south in the afternoon.

    High: 15 °F

    Partly Sunny

  • Tonight

    Tonight: A 40 percent chance of snow showers, mainly before 1am.  Mostly cloudy, with a temperature rising to around 19 by 5am. Wind chill values as low as -7. Breezy, with a southwest wind 21 to 24 mph.  New snow accumulation of less than a half inch possible.

    Low: 12 °F

    Chance Snow
    Showers and
    Breezy

  • Wednesday

    Wednesday: Snow.  High near 24. Windy, with a south wind 17 to 22 mph increasing to 25 to 30 mph in the afternoon.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 24 °F

    Snow and
    Windy

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 1am.  Low around 10. Wind chill values as low as -7. Windy, with a west wind 20 to 30 mph.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 10 °F

    Snow Showers
    and Windy

  • Thursday

    Thursday: A 40 percent chance of snow showers.  Mostly cloudy, with a high near 12. Windy, with a west wind 26 to 31 mph decreasing to 18 to 23 mph in the afternoon.  New snow accumulation of less than one inch possible.

    High: 12 °F

    Chance Snow
    Showers and
    Windy

  • Thursday Night

    Thursday Night: A 40 percent chance of snow before 1am.  Mostly cloudy, with a low around 6. Breezy, with a west wind 20 to 22 mph.

    Low: 6 °F

    Chance Snow
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 12. West wind 15 to 18 mph, with gusts as high as 28 mph.

    High: 12 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of snow after 1am.  Mostly cloudy, with a low around 9. West wind 10 to 15 mph.

    Low: 9 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: Snow likely, mainly after 1pm.  Mostly cloudy, with a high near 18. West wind 10 to 13 mph.  Chance of precipitation is 60%.

    High: 18 °F

    Snow Likely

Detailed Forecast

Today
Partly sunny, with a high near 15. Wind chill values as low as -33. West wind 8 to 16 mph becoming south in the afternoon.
Tonight
A 40 percent chance of snow showers, mainly before 1am. Mostly cloudy, with a temperature rising to around 19 by 5am. Wind chill values as low as -7. Breezy, with a southwest wind 21 to 24 mph. New snow accumulation of less than a half inch possible.
Wednesday
Snow. High near 24. Windy, with a south wind 17 to 22 mph increasing to 25 to 30 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow showers, mainly before 1am. Low around 10. Wind chill values as low as -7. Windy, with a west wind 20 to 30 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday
A 40 percent chance of snow showers. Mostly cloudy, with a high near 12. Windy, with a west wind 26 to 31 mph decreasing to 18 to 23 mph in the afternoon. New snow accumulation of less than one inch possible.
Thursday Night
A 40 percent chance of snow before 1am. Mostly cloudy, with a low around 6. Breezy, with a west wind 20 to 22 mph.
Friday
Partly sunny, with a high near 12. West wind 15 to 18 mph, with gusts as high as 28 mph.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 9. West wind 10 to 15 mph.
Saturday
Snow likely, mainly after 1pm. Mostly cloudy, with a high near 18. West wind 10 to 13 mph. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 8. West wind around 16 mph.
Sunday
A 40 percent chance of snow. Mostly cloudy and cold, with a high near 10. West wind 13 to 15 mph.
Sunday Night
Mostly cloudy, with a low around -2. West wind 15 to 17 mph.
Monday
Partly sunny and cold, with a high near 6. West wind 10 to 14 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Lyon Mountain NY
 44.67°N 73.89°W (Elev. 2677 ft)
12:24 am EST Dec 9, 2025
5am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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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