Heavy Rain in the Southeast; Wintry Mix from the Plains through the Ohio Valley

A storm system will bring a number impacts to the central and eastern US. Heavy rain and thunderstorms are expected in the Gulf Coast and Deep South. Further north, a wintry mix may produce a glaze of ice from the Ozarks/Mid-South east through the Ohio Valley. Accumulating snow is expected from the central Plains east into the Upper Ohio Valley/Lower Great Lakes. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fair

19°F

-7°C

Humidity 68%
Wind Speed Calm
Barometer 30.33 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 1 Dec 8:35 am EST
Extended Forecast for

Great Valley NY

Winter Weather Advisory December 2, 01:00am until December 2, 07:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Today

    Today: Partly sunny, with a high near 27. Light northwest wind.

    High: 27 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of snow showers, mainly between 1am and 3am, then snow likely after 3am.  Mostly cloudy, with a low around 16. Calm wind.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 16 °F

    Slight Chance
    Snow Showers
    then Snow
    Likely

  • Tuesday

    Tuesday: Snow before 1pm, then a chance of snow showers after 1pm.  High near 32. Calm wind becoming northwest around 5 mph in the afternoon.  Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    High: 32 °F

    Snow

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers before 1am.  Mostly cloudy, with a low around 18. Light and variable wind.  Chance of precipitation is 20%.

    Low: 18 °F

    Slight Chance
    Snow Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 31. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 31 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly after 1am.  Mostly cloudy, with a low around 19. Southwest wind around 7 mph.  Chance of precipitation is 70%.

    Low: 19 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Thursday

    Thursday: Snow showers likely, mainly before 1pm.  Mostly cloudy, with a high near 27. Northwest wind 7 to 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 70%.

    High: 27 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5. Light and variable wind.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 27.

    High: 27 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 27. Light northwest wind.
Tonight
A chance of snow showers, mainly between 1am and 3am, then snow likely after 3am. Mostly cloudy, with a low around 16. Calm wind. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Tuesday
Snow before 1pm, then a chance of snow showers after 1pm. High near 32. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 18. Light and variable wind. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 31. Calm wind becoming southwest 5 to 8 mph in the morning.
Wednesday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 19. Southwest wind around 7 mph. Chance of precipitation is 70%.
Thursday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 27. Northwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Thursday Night
Mostly cloudy, with a low around 5. Light and variable wind.
Friday
Mostly sunny, with a high near 27.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 50%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 60%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 22. Chance of precipitation is 50%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Great Valley NY
 42.21°N 78.6°W (Elev. 1558 ft)
9:36 am EST Dec 1, 2025
9am EST Dec 1, 2025-6pm EST Dec 7, 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