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.

Overcast

50°F

10°C

Humidity 82%
Wind Speed S 9 mph
Barometer 30.21 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 4 Oct 10:55 am EDT
Extended Forecast for

Delevan NY

  • Today

    Today: Mostly sunny, with a high near 66. Southwest wind 11 to 15 mph.

    High: 66 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 44. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 44 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 11am. Mostly sunny, with a high near 56. Northwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 56 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Patchy frost after 3am. Otherwise, mostly clear, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Frost

  • Tuesday

    Tuesday: Patchy frost before 9am. Otherwise, sunny, with a high near 59. Calm wind becoming west around 5 mph in the afternoon.

    High: 59 °F

    Patchy Frost
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 40. Calm wind becoming south around 6 mph after midnight.

    Low: 40 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 66. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Partly cloudy, with a low around 44. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 44 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 66. Southwest wind 11 to 15 mph.
Tonight
A slight chance of showers between 1am and 2am. Increasing clouds, with a low around 44. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 20%.
Monday
A slight chance of showers after 11am. Mostly sunny, with a high near 56. Northwest wind 7 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday Night
Patchy frost after 3am. Otherwise, mostly clear, with a low around 35. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Patchy frost before 9am. Otherwise, sunny, with a high near 59. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 40. Calm wind becoming south around 6 mph after midnight.
Wednesday
Sunny, with a high near 66. Southwest wind 7 to 9 mph, with gusts as high as 21 mph.
Wednesday Night
A chance of showers before 2am. Partly cloudy, with a low around 44. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 42.
Friday
Sunny, with a high near 63.
Friday Night
Partly cloudy, with a low around 40.
Saturday
Mostly sunny, with a high near 63.
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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:
9:58 am EDT Oct 4, 2026
Forecast Valid:
11am EDT Oct 4, 2026-6pm EDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation