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

54°F

12°C

Humidity 82%
Wind Speed NA
Barometer 30.25 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 18 Sep 9:35 pm EDT
Extended Forecast for

Delevan NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 68. Light east wind.

    High: 68 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Showers, mainly after midnight. Low around 55. South wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Showers

  • Sunday

    Sunday: Showers, mainly between 7am and 2pm. High near 66. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 66 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 47. Northeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 60. Northeast wind around 8 mph.

    High: 60 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of showers after 2am. Mostly cloudy, with a low around 45. East wind around 7 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 59. East wind around 7 mph. Chance of precipitation is 40%.

    High: 59 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 47. Calm wind.
Saturday
Mostly cloudy, with a high near 68. Light east wind.
Saturday Night
Showers, mainly after midnight. Low around 55. South wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers, mainly between 7am and 2pm. High near 66. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 47. Northeast wind around 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, with a high near 60. Northeast wind around 8 mph.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 45. East wind around 7 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 59. East wind around 7 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 47.
Friday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Delevan NY
 42.48°N 78.49°W (Elev. 1476 ft)
Last Update:
7:57 pm EDT Sep 18, 2026
Forecast Valid:
9pm EDT Sep 18, 2026-6pm EDT Sep 25, 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