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

46°F

8°C

Humidity 82%
Wind Speed N 5 mph
Barometer 30.21 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 15 Oct 3:35 am EDT
Extended Forecast for

Delevan NY

  • Overnight

    Overnight: Cloudy, with a low around 45. North wind around 7 mph.

    Low: 45 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 62. East wind 7 to 9 mph.

    High: 62 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: A chance of showers before 1am, then rain likely between 1am and 2am, then periods of rain and possibly a thunderstorm after 2am. Low around 55. Southeast wind 8 to 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Slight Chance
    Showers then
    Showers

  • Friday

    Friday: Periods of rain and possibly a thunderstorm. High near 67. Southwest wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Rain

  • Friday Night

    Friday Night: Periods of rain before 2am, then a chance of showers after 2am. Low around 34. North wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain

  • Saturday

    Saturday: A chance of rain and snow showers, mainly before 8am. Mostly sunny, with a high near 44. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Southwest wind 3 to 7 mph.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

Detailed Forecast

Overnight
Cloudy, with a low around 45. North wind around 7 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 62. East wind 7 to 9 mph.
Thursday Night
A chance of showers before 1am, then rain likely between 1am and 2am, then periods of rain and possibly a thunderstorm after 2am. Low around 55. Southeast wind 8 to 18 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Periods of rain and possibly a thunderstorm. High near 67. Southwest wind 11 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Periods of rain before 2am, then a chance of showers after 2am. Low around 34. North wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A chance of rain and snow showers, mainly before 8am. Mostly sunny, with a high near 44. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Mostly clear, with a low around 30. Calm wind.
Sunday
Sunny, with a high near 60. Southwest wind 3 to 7 mph.
Sunday Night
Clear, with a low around 36.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Delevan NY
 42.5°N 78.49°W (Elev. 1365 ft)
Last Update:
2:22 am EDT Oct 15, 2026
Forecast Valid:
3am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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