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Hazardous Weather Conditions

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Overcast and Breezy

30°F

-1°C

Humidity 64%
Wind Speed W 21 G 33 mph
Barometer 30.01 in (1018.7 mb)
Dewpoint 19°F (-7°C)
Visibility 8.00 mi
Wind Chill17°F (-8°C)
Last update 28 Nov 1:56 pm EST
Extended Forecast for

4 Miles NNW Youngsville PA

Lake Effect Snow Warning November 28, 02:24pm until November 29, 01:00am
Click here for hazard details and duration
Lake Effect Snow Warning
  •  
    Lake Effect Snow Warning November 28, 02:24pm until November 29, 01:00am

    NOW until 1:00am Sat

    Lake Effect Snow Warning

  • This Afternoon

    High: 31 °F

    Heavy Snow

  • Tonight

    Tonight: Snow showers likely, mainly before 8pm. The snow could be heavy at times. Mostly cloudy, with a low around 21. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Heavy Snow

  • Saturday

    Saturday: A slight chance of snow showers before 10am, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 32. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.

    High: 32 °F

    Slight Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Snow. Low around 25. South wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 25 °F

    Snow Likely
    then Snow

  • Sunday

    Sunday: Snow before 10am, then rain and snow. High near 38. South wind around 14 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 38 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow, mainly before 1am. Low around 20. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 20 °F

    Snow

  • Monday

    Monday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Snow likely after 1am. Cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Mostly Cloudy
    then Snow
    Likely

Detailed Forecast

This Afternoon
Frequent snow showers. The snow could be heavy at times. High near 31. West wind around 14 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow showers likely, mainly before 8pm. The snow could be heavy at times. Mostly cloudy, with a low around 21. West wind 6 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Saturday
A slight chance of snow showers before 10am, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 32. West wind around 5 mph becoming south in the afternoon. Chance of precipitation is 20%.
Saturday Night
Snow. Low around 25. South wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Sunday
Snow before 10am, then rain and snow. High near 38. South wind around 14 mph becoming southwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Sunday Night
Snow, mainly before 1am. Low around 20. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Monday
Mostly cloudy, with a high near 29.
Monday Night
Snow likely after 1am. Cloudy, with a low around 20. Chance of precipitation is 60%.
Tuesday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Tuesday Night
A chance of snow before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 31.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Thursday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Youngsville PA
 41.9°N 79.35°W (Elev. 1677 ft)
Last Update:
1:05 pm EST Nov 28, 2025
Forecast Valid:
2pm EST Nov 28, 2025-6pm EST Dec 4, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation