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.

Rain

41°F

5°C

Humidity 100%
Wind Speed SW 3 mph
Barometer 29.75 in
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Last update 20 Mar 1:35 pm EDT
Extended Forecast for

Delevan NY

  • This Afternoon

    This Afternoon: Rain, mainly before 4pm. High near 49. Southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 49 °F

    Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. Northwest wind 3 to 5 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 47. Light northwest wind.

    High: 47 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of rain after 2am. Mostly cloudy, with a low around 37. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain likely, mainly after 2pm. Mostly cloudy, with a high near 56. Southwest wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain showers likely before 11pm, then rain and snow showers likely. Cloudy, with a low around 27. Northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 27 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow showers before 8am. Mostly cloudy, with a high near 34. North wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 34 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 19. Northwest wind around 6 mph.

    Low: 19 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Rain, mainly before 4pm. High near 49. Southwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Mostly cloudy, with a low around 31. Northwest wind 3 to 5 mph.
Saturday
Partly sunny, with a high near 47. Light northwest wind.
Saturday Night
A chance of rain after 2am. Mostly cloudy, with a low around 37. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.
Sunday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 56. Southwest wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers likely before 11pm, then rain and snow showers likely. Cloudy, with a low around 27. Northeast wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A chance of snow showers before 8am. Mostly cloudy, with a high near 34. North wind 6 to 8 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 19. Northwest wind around 6 mph.
Tuesday
Partly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Mostly cloudy, with a high near 39.
Wednesday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Thursday
A chance of rain and snow showers. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.
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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 Mar 20, 2026
Forecast Valid:
1pm EDT Mar 20, 2026-6pm EDT Mar 26, 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