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

59°F

15°C

Humidity 51%
Wind Speed S 5 mph
Barometer 30.37 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 10 Oct 6:35 pm EDT
Extended Forecast for

Delevan NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 52. South wind 5 to 8 mph, with gusts as high as 20 mph.

    Low: 52 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain. High near 61. South wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 61 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain before 2am. Mostly cloudy, with a low around 53. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance Rain

  • Columbus Day

    Columbus Day: Mostly cloudy, with a high near 67. Light west wind.

    High: 67 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 55. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 55 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 69. Southwest wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 69 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 54. West wind around 7 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly cloudy, with a high near 62. West wind around 6 mph. Chance of precipitation is 30%.

    High: 62 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 52. South wind 5 to 8 mph, with gusts as high as 20 mph.
Sunday
Rain. High near 61. South wind 8 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of rain before 2am. Mostly cloudy, with a low around 53. Light and variable wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Columbus Day
Mostly cloudy, with a high near 67. Light west wind.
Monday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 55. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 20%.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 69. Southwest wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 54. West wind around 7 mph. Chance of precipitation is 60%.
Wednesday
A chance of showers after 2pm. Mostly cloudy, with a high near 62. West wind around 6 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 44. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 61.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 50%.
Friday
Showers likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 49. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Delevan NY
 42.48°N 78.49°W (Elev. 1476 ft)
Last Update:
3:57 pm EDT Oct 10, 2026
Forecast Valid:
7pm EDT Oct 10, 2026-6pm EDT Oct 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