Heavy Rainfall Along the Central Gulf Coast; Thunderstorms from the Plains to the Central Appalachians; Heat Across the East

A system in the Gulf could produce heavy rainfall and flash flooding for portions of the north-central Gulf Coast into Saturday. Widespread showers and thunderstorms are likely this afternoon into Friday from Central Plains into the mid-Mississippi Valley, Ohio Valley and Central Appalachians. Dangerous heat is expected from the Lower Mississippi Valley to the Mid-Atlantic today. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

73°F

23°C

Humidity 74%
Wind Speed SW 10 G 22 mph
Barometer 29.88 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 Jul 11:55 am EDT
Extended Forecast for

3 Miles SW Delevan NY

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, mainly before 2pm.  Mostly cloudy, with a high near 77. Breezy, with a west wind 18 to 20 mph, with gusts as high as 32 mph.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. West wind 6 to 13 mph.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Cloudy through mid morning, then gradual clearing, with a high near 72. North wind 3 to 5 mph.

    High: 72 °F

    Gradual
    Clearing

  • Friday Night

    Friday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 79. Southwest wind 3 to 6 mph.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am.  Mostly cloudy, with a low around 63. Southwest wind around 5 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers before 8am.  Partly sunny, with a high near 75. Northwest wind 5 to 7 mph.  Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56. Light northeast wind.

    Low: 56 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, mainly before 2pm. Mostly cloudy, with a high near 77. Breezy, with a west wind 18 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly cloudy, with a low around 56. West wind 6 to 13 mph.
Friday
Cloudy through mid morning, then gradual clearing, with a high near 72. North wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 56. Calm wind.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 79. Southwest wind 3 to 6 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 63. Southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers before 8am. Partly sunny, with a high near 75. Northwest wind 5 to 7 mph. Chance of precipitation is 30%.
Sunday Night
Mostly clear, with a low around 56. Light northeast wind.
Monday
Sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Delevan NY
 42.46°N 78.52°W (Elev. 1772 ft)
10:36 am EDT Jul 17, 2025
12pm EDT Jul 17, 2025-6pm EDT Jul 23, 2025
 
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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