Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Partly Cloudy

N/A

Humidity NA
Wind Speed SW 6 mph
Barometer 29.93 in
Dewpoint N/A
Visibility 10.00 mi
Last update 18 Jun 9:35 pm EDT
Extended Forecast for

Portville NY

  • Tonight

    Tonight: A slight chance of showers before 10pm, then a slight chance of showers after 1am.  Mostly cloudy, with a low around 64. Calm wind becoming south around 6 mph after midnight.  Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 76. West wind 9 to 13 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am.  Mostly cloudy, with a low around 55. West wind 5 to 8 mph, with gusts as high as 20 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 77. West wind 6 to 9 mph.  Chance of precipitation is 20%.

    High: 77 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. West wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers.  Partly cloudy, with a low around 67. Southwest wind around 6 mph.  Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 89. West wind 6 to 8 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers before 10pm, then a slight chance of showers after 1am. Mostly cloudy, with a low around 64. Calm wind becoming south around 6 mph after midnight. Chance of precipitation is 20%.
Juneteenth
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 76. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 55. West wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 77. West wind 6 to 9 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 59. West wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 83. Light southwest wind increasing to 5 to 9 mph in the morning.
Saturday Night
A chance of showers. Partly cloudy, with a low around 67. Southwest wind around 6 mph. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 89. West wind 6 to 8 mph.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 69.
Tuesday
Sunny and hot, with a high near 92.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Showers likely and possibly a thunderstorm. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
Portville NY
 42.05°N 78.33°W (Elev. 2001 ft)
7:36 pm EDT Jun 18, 2025
9pm EDT Jun 18, 2025-6pm EDT Jun 25, 2025
 
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Additional Resources

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Hourly Weather Forecast

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