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

Prolonged Atmospheric River in the Pacific Northwest; Snow and High Winds in the North-Central U.S.

A prolonged atmospheric river will continue impacting the Pacific Northwest with heavy rainfall which has lead to areas of urban and river flooding along with gusty winds into Thursday. A clipper will bring heavy snow, some mixed wintry precipitation, and gusty to high winds across the northern Plains, Upper Midwest, and the Great Lakes into Thursday morning. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Partly Cloudy

7°F

-14°C

Humidity 61%
Wind Speed S 8 mph
Barometer 29.97 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 9 Dec 9:35 am EST
Extended Forecast for

4 Miles E Great Valley NY

Winter Weather Advisory December 10, 01:00am until December 10, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: Snow showers likely, mainly between 2pm and 4pm. Cloudy, with a high near 28. Wind chill values as low as -10. South wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.

    High: 28 °F

    Mostly Cloudy
    then Snow
    Showers
    Likely

  • Tonight

    Tonight: Snow likely, mainly after 4am. Cloudy, with a low around 24. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 24 °F

    Cloudy then
    Snow Likely

  • Wednesday

    Wednesday: Snow. High near 35. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 35 °F

    Snow

  • Wednesday Night

    Wednesday Night: Snow showers. Low around 17. West wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 17 °F

    Snow Showers

  • Thursday

    Thursday: Snow showers. High near 24. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 24 °F

    Snow Showers

  • Thursday Night

    Thursday Night: Snow showers likely. Mostly cloudy, with a low around 16. West wind around 7 mph. Chance of precipitation is 60%.

    Low: 16 °F

    Snow Showers
    Likely

  • Friday

    Friday: A chance of snow showers. Mostly cloudy, with a high near 26. West wind around 7 mph. Chance of precipitation is 50%.

    High: 26 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Snow showers. Low around 15. Southwest wind around 6 mph. Chance of precipitation is 80%.

    Low: 15 °F

    Snow Showers

  • Saturday

    Saturday: Snow showers. High near 24. Chance of precipitation is 80%.

    High: 24 °F

    Snow Showers

Detailed Forecast

Today
Snow showers likely, mainly between 2pm and 4pm. Cloudy, with a high near 28. Wind chill values as low as -10. South wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly after 4am. Cloudy, with a low around 24. South wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Wednesday
Snow. High near 35. South wind 8 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Wednesday Night
Snow showers. Low around 17. West wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Thursday
Snow showers. High near 24. West wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday Night
Snow showers likely. Mostly cloudy, with a low around 16. West wind around 7 mph. Chance of precipitation is 60%.
Friday
A chance of snow showers. Mostly cloudy, with a high near 26. West wind around 7 mph. Chance of precipitation is 50%.
Friday Night
Snow showers. Low around 15. Southwest wind around 6 mph. Chance of precipitation is 80%.
Saturday
Snow showers. High near 24. Chance of precipitation is 80%.
Saturday Night
Snow showers likely. Cloudy, with a low around 11. Chance of precipitation is 70%.
Sunday
Snow showers likely. Mostly cloudy, with a high near 18. Chance of precipitation is 70%.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 5. Chance of precipitation is 40%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 21. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Great Valley NY
 42.22°N 78.53°W (Elev. 2001 ft)
Last Update:
9:36 am EST Dec 9, 2025
Forecast Valid:
9am EST Dec 9, 2025-6pm EST Dec 15, 2025
 
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