National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fair

68°F

20°C

Humidity 64%
Wind Speed E 5 mph
Barometer 30.24 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 15 Aug 9:15 am EDT
Extended Forecast for

Olean NY

  • Today

    Today: Sunny, with a high near 87. Calm wind.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Areas of fog before 8am. Otherwise, sunny, with a high near 88. Light and variable wind. Chance of precipitation is 20%.

    High: 88 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.

    Low: 61 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 53. Light northeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 87. Calm wind.
Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 60. Calm wind.
Saturday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Areas of fog before 8am. Otherwise, sunny, with a high near 88. Light and variable wind. Chance of precipitation is 20%.
Saturday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.
Sunday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 53. Light northeast wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 80. Calm wind becoming northeast around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 56. Calm wind.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Olean NY
 42.08°N 78.41°W (Elev. 1470 ft)
Last Update:
7:36 am EDT Aug 15, 2025
Forecast Valid:
9am EDT Aug 15, 2025-6pm EDT Aug 21, 2025
 
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