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

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

27°F

-3°C

Humidity 80%
Wind Speed Calm
Barometer 29.78 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 11 Jan 7:35 am EST
Extended Forecast for

Great Valley NY

Winter Weather Advisory until January 12, 01:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 12, 01:00am

    NOW until 1:00am Mon

    Winter Weather Advisory

  • Today

    High: 28 °F

    Snow and
    Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow showers likely, mainly before 9pm. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 21. West wind 7 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 21 °F

    Snow Showers
    Likely and
    Patchy
    Blowing Snow

  • Monday

    Monday: A slight chance of snow showers after 1pm. Partly sunny, with a high near 30. West wind 6 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 30 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: A slight chance of snow showers. Mostly cloudy, with a low around 25. West wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Snow Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 36. South wind 6 to 9 mph, with gusts as high as 22 mph.

    High: 36 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers. Cloudy, with a low around 32. Southwest wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Rain showers likely before 1pm, then rain and snow showers. High near 36. Southwest wind 6 to 8 mph. Chance of precipitation is 80%.

    High: 36 °F

    Showers
    Likely then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow showers likely. Cloudy, with a low around 13. Northwest wind around 6 mph. Chance of precipitation is 70%.

    Low: 13 °F

    Snow Showers
    Likely

Detailed Forecast

Today
Snow showers likely, mainly between 11am and noon, then snow after noon. Patchy blowing snow after 2pm. High near 28. West wind 11 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow showers likely, mainly before 9pm. Patchy blowing snow before 9pm. Mostly cloudy, with a low around 21. West wind 7 to 17 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday
A slight chance of snow showers after 1pm. Partly sunny, with a high near 30. West wind 6 to 10 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Monday Night
A slight chance of snow showers. Mostly cloudy, with a low around 25. West wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 36. South wind 6 to 9 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of rain and snow showers. Cloudy, with a low around 32. Southwest wind 7 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain showers likely before 1pm, then rain and snow showers. High near 36. Southwest wind 6 to 8 mph. Chance of precipitation is 80%.
Wednesday Night
Snow showers likely. Cloudy, with a low around 13. Northwest wind around 6 mph. Chance of precipitation is 70%.
Thursday
A chance of snow showers before 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
A chance of snow showers. Partly sunny, with a high near 23. Chance of precipitation is 40%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 40%.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Valley NY
 42.23°N 78.59°W (Elev. 1877 ft)
Last Update:
6:42 am EST Jan 11, 2026
Forecast Valid:
7am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
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