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.

Fair

46°F

8°C

Humidity 62%
Wind Speed S 3 mph
Barometer 30.06 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 16 May 12:35 am EDT
Extended Forecast for

Great Valley NY

  • Overnight

    Overnight: Clear, with a low around 42. Light southeast wind.

    Low: 42 °F

    Clear

  • Saturday

    Saturday: A slight chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 74. Southwest wind 6 to 13 mph. Chance of precipitation is 30%.

    High: 74 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog between 11pm and midnight. Otherwise, cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 57 °F

    Chance
    T-storms and
    Patchy Fog
    then Mostly
    Cloudy

  • Sunday

    Sunday: A slight chance of showers after 2pm. Mostly sunny, with a high near 80. Light west wind. Chance of precipitation is 20%.

    High: 80 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 86. Southwest wind 3 to 8 mph.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. Light south wind.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Southwest wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Clear, with a low around 42. Light southeast wind.
Saturday
A slight chance of showers between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 74. Southwest wind 6 to 13 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog between 11pm and midnight. Otherwise, cloudy, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 40%.
Sunday
A slight chance of showers after 2pm. Mostly sunny, with a high near 80. Light west wind. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 58. Calm wind.
Monday
Sunny, with a high near 86. Southwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 65. Light south wind.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Southwest wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after 8am. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
Wednesday Night
Mostly cloudy, with a low around 43.
Thursday
Partly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Mostly sunny, with a high near 66.
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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:
2:22 am EDT May 16, 2026
Forecast Valid:
2am EDT May 16, 2026-6pm EDT May 22, 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