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

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Partly Cloudy

37°F

3°C

Humidity 81%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 21 Mar 11:15 pm EDT
Extended Forecast for

Great Valley NY

  • Tonight

    Tonight: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 40. South wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 40 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers, mainly after 1pm. High near 61. Southwest wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Rain showers likely before 11pm, then snow showers likely. Cloudy, with a low around 27. Light northeast wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Rain/Snow
    Likely then
    Snow Showers
    Likely

  • Monday

    Monday: A chance of snow showers before 8am. Mostly cloudy, with a high near 35. North wind around 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 35 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.

    Low: 20 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29. Southwest wind 3 to 5 mph.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 46. West wind around 7 mph.

    High: 46 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of snow showers before 8pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
A chance of showers, mainly after 5am. Mostly cloudy, with a low around 40. South wind 3 to 7 mph. Chance of precipitation is 30%.
Sunday
Showers, mainly after 1pm. High near 61. Southwest wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers likely before 11pm, then snow showers likely. Cloudy, with a low around 27. Light northeast wind. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
A chance of snow showers before 8am. Mostly cloudy, with a high near 35. North wind around 7 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Monday Night
Mostly cloudy, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 45. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 29. Southwest wind 3 to 5 mph.
Wednesday
Mostly cloudy, with a high near 46. West wind around 7 mph.
Wednesday Night
A chance of snow showers before 8pm, then a chance of rain and snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Thursday Night
Rain and snow showers likely. Mostly cloudy, with a low around 26. Chance of precipitation is 60%.
Friday
A chance of rain and snow showers. Partly sunny, with a high near 36. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Great Valley NY
 42.21°N 78.6°W (Elev. 1558 ft)
Last Update:
9:58 pm EDT Mar 21, 2026
Forecast Valid:
11pm EDT Mar 21, 2026-6pm EDT Mar 28, 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