Extreme Heat and Fire Weather Conditions in the West; Heavy Rain in the Southeast; Poor Air Quality

Extreme heat will begin to peak across the Desert Southwest. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Poor air quality persists from the Upper Midwest into the Northeast due to wildfire smoke. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Mostly Cloudy

70°F

21°C

Humidity 73%
Wind Speed Calm
Barometer 30.41 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 6 Aug 2:35 pm EDT
Extended Forecast for

Portville NY

  • This Afternoon

    This Afternoon: A slight chance of showers and thunderstorms.  Areas of smoke. Partly sunny, with a high near 81. Southeast wind around 6 mph.  Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Areas of smoke before 2am. Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Areas Smoke
    then Patchy
    Fog

  • Thursday

    Thursday: Widespread haze before 3pm. Patchy fog before 9am.  Otherwise, sunny, with a high near 82. Calm wind becoming south around 6 mph in the morning.

    High: 82 °F

    Patchy Fog
    then Haze

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. South wind 3 to 6 mph.

    High: 82 °F

    Sunny

  • Friday Night

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

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 85. Light south wind.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

This Afternoon
A slight chance of showers and thunderstorms. Areas of smoke. Partly sunny, with a high near 81. Southeast wind around 6 mph. Chance of precipitation is 20%.
Tonight
Areas of smoke before 2am. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 56. Calm wind.
Thursday
Widespread haze before 3pm. Patchy fog before 9am. Otherwise, sunny, with a high near 82. Calm wind becoming south around 6 mph in the morning.
Thursday Night
Mostly clear, with a low around 57. Calm wind.
Friday
Sunny, with a high near 82. South wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 56. Calm wind.
Saturday
Sunny, with a high near 85. Light south wind.
Saturday Night
Mostly clear, with a low around 58. Calm wind.
Sunday
Sunny, with a high near 88.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Portville NY
 42.03°N 78.33°W (Elev. 1601 ft)
1:37 pm EDT Aug 6, 2025
3pm EDT Aug 6, 2025-6pm EDT Aug 13, 2025
 
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Additional Resources

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Hourly Weather Forecast

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