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

45°F

7°C

Humidity 66%
Wind Speed S 6 mph
Barometer 30.20 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 10 Apr 5:15 am EDT
Extended Forecast for

Delevan NY

  • Overnight

    Overnight: A slight chance of showers. Mostly cloudy, with a low around 48. South wind around 10 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Slight Chance
    Showers

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 3pm. High near 66. South wind 13 to 16 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Partly Sunny
    then Showers

  • Friday Night

    Friday Night: Showers, mainly before 8pm. Patchy fog after 2am. Low around 32. Northwest wind 6 to 11 mph becoming light after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 32 °F

    Showers then
    Patchy Fog

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Northwest wind 3 to 6 mph.

    High: 49 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers. Mostly cloudy, with a high near 63. South wind around 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 55. South wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 66. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 48. South wind around 10 mph. Chance of precipitation is 20%.
Friday
Showers likely, then showers and possibly a thunderstorm after 3pm. High near 66. South wind 13 to 16 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers, mainly before 8pm. Patchy fog after 2am. Low around 32. Northwest wind 6 to 11 mph becoming light after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 49. Northwest wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 32. Calm wind.
Sunday
A chance of showers. Mostly cloudy, with a high near 63. South wind around 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 55. South wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Monday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 66. Southwest wind 10 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Tuesday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Delevan NY
 42.48°N 78.49°W (Elev. 1476 ft)
Last Update:
5:25 am EDT Apr 10, 2026
Forecast Valid:
5am EDT Apr 10, 2026-6pm EDT Apr 16, 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