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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Mostly Cloudy

68°F

20°C

Humidity 40%
Wind Speed SW 5 mph
Barometer 29.80 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 16 Jun 5:15 pm EDT
Extended Forecast for

Olean NY

  • Tonight

    Tonight: A chance of showers, mainly after 2am. Partly cloudy, with a low around 51. South wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74. Southwest wind 5 to 9 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers, with thunderstorms also possible after 2am. Low around 56. South wind 5 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 75. Southwest wind around 15 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 52. West wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers

  • Juneteenth

    Juneteenth: A slight chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 71. West wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50. West wind 5 to 8 mph.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 69. West wind 9 to 11 mph, with gusts as high as 24 mph.

    High: 69 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of showers, mainly after 2am. Partly cloudy, with a low around 51. South wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 74. Southwest wind 5 to 9 mph, with gusts as high as 22 mph.
Wednesday Night
Showers, with thunderstorms also possible after 2am. Low around 56. South wind 5 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. High near 75. Southwest wind around 15 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 52. West wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
A slight chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 71. West wind 8 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 50. West wind 5 to 8 mph.
Saturday
Mostly sunny, with a high near 69. West wind 9 to 11 mph, with gusts as high as 24 mph.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Mostly sunny, with a high near 72.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 70. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Olean NY
 42.06°N 78.44°W (Elev. 1745 ft)
Last Update:
3:57 pm EDT Jun 16, 2026
Forecast Valid:
5pm EDT Jun 16, 2026-6pm EDT Jun 23, 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