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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Hazardous Weather Conditions

Current conditions at

Cattaraugus County-Olean Airport (KOLE)

Lat: 42.24°NLon: 78.37°WElev: 2135ft.

Fair

32°F

0°C

Humidity 80%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 15 Nov 12:55 am EST
Extended Forecast for

2 Miles SE Portville NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers, mainly after 2pm. High near 56. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Mostly Cloudy
    then Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers. Low around 33. Southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 33 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: Rain and snow showers likely, becoming all snow after 10am. Mostly cloudy, with a high near 40. West wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow
    Likely then
    Snow Showers
    Likely

  • Sunday Night

    Sunday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 24. Northwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.

    Low: 24 °F

    Snow Showers
    Likely

  • Monday

    Monday: A chance of snow showers. Mostly cloudy, with a high near 38. Northwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 38 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24. West wind 3 to 8 mph.

    Low: 24 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers before 1pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 41. West wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 41 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. Calm wind.
Saturday
Showers, mainly after 2pm. High near 56. Calm wind becoming south 5 to 8 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers. Low around 33. Southwest wind 9 to 11 mph becoming northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain and snow showers likely, becoming all snow after 10am. Mostly cloudy, with a high near 40. West wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 24. Northwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 60%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 38. Northwest wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 24. West wind 3 to 8 mph.
Tuesday
A chance of snow showers before 1pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 41. West wind 3 to 6 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Partly sunny, with a high near 45.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
A chance of showers. Mostly cloudy, with a high near 49. Chance of precipitation is 40%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 32. Chance of precipitation is 70%.
Friday
Showers likely. Mostly cloudy, with a high near 50. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Portville NY
 42°N 78.3°W (Elev. 1480 ft)
Last Update:
12:36 am EST Nov 15, 2025
Forecast Valid:
1am EST Nov 15, 2025-6pm EST Nov 21, 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