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

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Overcast

28°F

-2°C

Humidity 74%
Wind Speed NW 8 G 17 mph
Barometer 29.65 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 17 Nov 3:35 am EST
Extended Forecast for

Portville NY

Winter Weather Advisory November 17, 05:12am until November 17, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory November 17, 05:12am until November 17, 01:00pm

    NOW until 1:00pm Mon

    Winter Weather Advisory

  • Overnight

    Low: 28 °F

    Chance Snow
    Showers

  • Monday

    Monday: Snow showers, mainly after 9am. High near 37. Northwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Chance Snow
    Showers then
    Snow Showers

  • Monday Night

    Monday Night: Snow showers, mainly before midnight. Low around 24. West wind 5 to 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow Showers
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: A slight chance of snow showers before 10am, then a slight chance of snow showers after 1pm. Mostly cloudy, with a high near 41. West wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 21. Calm wind. Chance of precipitation is 30%.

    Low: 21 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44. Calm wind.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 47. Calm wind becoming south around 5 mph.

    High: 47 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow showers. Cloudy, with a low around 28. Northwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of 1 to 2 inches possible.
Monday
Snow showers, mainly after 9am. High near 37. Northwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday Night
Snow showers, mainly before midnight. Low around 24. West wind 5 to 9 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Tuesday
A slight chance of snow showers before 10am, then a slight chance of snow showers after 1pm. Mostly cloudy, with a high near 41. West wind around 6 mph becoming calm in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 21. Calm wind. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 44. Calm wind.
Wednesday Night
Mostly cloudy, with a low around 25. Calm wind.
Thursday
Mostly cloudy, with a high near 47. Calm wind becoming south around 5 mph.
Thursday Night
Showers, mainly after 1am. Low around 36. Chance of precipitation is 80%.
Friday
Showers. High near 53. Chance of precipitation is 80%.
Friday Night
Showers likely. Cloudy, with a low around 34. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 49. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portville NY
 42.03°N 78.33°W (Elev. 1601 ft)
Last Update:
3:35 am EST Nov 17, 2025
Forecast Valid:
5am EST Nov 17, 2025-6pm EST Nov 23, 2025
 
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