Lala Impacting Hawaii; Flash Flooding Risks; Excessive Heat

Lala will continue to impact Hawaii through the weekend. Heavy rainfall, strong winds, dangerous surf and localized flooding are expected. Thunderstorms, heavy rainfall and flash flooding concerns from the mid-Mississippi Valley, Ohio Valley into the central Appalachians and the mid-Atlantic through today. Record heat continues for areas of the Mississippi Valley into the Southeast. Read More >

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Mostly Cloudy

72°F

22°C

Humidity 78%
Wind Speed S 6 mph
Barometer 29.96 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 16 Aug 4:15 pm EDT
Extended Forecast for

Portville NY

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms after 5pm.  Cloudy, with a high near 76. South wind around 7 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Cloudy, with a low around 67. Calm wind becoming west around 5 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms, mainly before 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 78. Northwest wind 3 to 8 mph.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers then
    Partly Sunny

  • Monday Night

    Monday Night: Patchy fog after 11pm.  Otherwise, partly cloudy, with a low around 55. Light northwest wind.

    Low: 55 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

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

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 76. West wind 3 to 6 mph.  Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers.  Mostly cloudy, with a low around 53. Light northwest wind.  Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms after 5pm. Cloudy, with a high near 76. South wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 2am, then a slight chance of showers. Cloudy, with a low around 67. Calm wind becoming west around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 78. Northwest wind 3 to 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55. Light northwest wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming northwest around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 56. Calm wind.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 76. West wind 3 to 6 mph. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers. Mostly cloudy, with a low around 53. Light northwest wind. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Portville NY
 42.01°N 78.33°W (Elev. 1532 ft)
3:57 pm EDT Aug 16, 2026
4pm EDT Aug 16, 2026-6pm EDT Aug 23, 2026
 
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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