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Hazardous Weather Conditions

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Light Snow

28°F

-2°C

Humidity 69%
Wind Speed W 12 G 21 mph
Barometer 30.19 in (1025.0 mb)
Dewpoint 19°F (-7°C)
Visibility 9.00 mi
Wind Chill18°F (-8°C)
Last update 28 Nov 9:56 pm EST
Extended Forecast for

3 Miles N Grand Valley PA

Lake Effect Snow Warning November 28, 10:32pm until November 29, 01:00am
Click here for hazard details and duration
Lake Effect Snow Warning
  •  
    Lake Effect Snow Warning November 28, 10:32pm until November 29, 01:00am

    NOW until 1:00am Sat

    Lake Effect Snow Warning

  • Tonight

    Low: 19 °F

    Scattered
    Snow Showers

  • Saturday

    Saturday: Isolated snow showers before 7am, then a chance of snow showers after 4pm. Mostly cloudy, with a high near 32. Light and variable wind becoming southwest around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday Night

    Saturday Night: Snow. Low around 25. Southeast wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.

    Low: 25 °F

    Snow Likely
    then Snow

  • Sunday

    Sunday: Snow before 10am, then rain and snow. High near 37. South wind around 14 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 37 °F

    Rain/Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before 1am. Cloudy, with a low around 20. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Snow Likely

  • Monday

    Monday: Mostly cloudy, with a high near 29.

    High: 29 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of snow after 1am. Cloudy, with a low around 20. Chance of precipitation is 50%.

    Low: 20 °F

    Cloudy then
    Chance Snow

  • Tuesday

    Tuesday: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.

    High: 32 °F

    Snow Likely

Detailed Forecast

Tonight
Scattered snow showers, mainly before 4am. Mostly cloudy, with a low around 19. West wind 6 to 8 mph. Chance of precipitation is 40%.
Saturday
Isolated snow showers before 7am, then a chance of snow showers after 4pm. Mostly cloudy, with a high near 32. Light and variable wind becoming southwest around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday Night
Snow. Low around 25. Southeast wind 5 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow before 10am, then rain and snow. High near 37. South wind around 14 mph becoming southwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Sunday Night
Snow likely, mainly before 1am. Cloudy, with a low around 20. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 29.
Monday Night
A chance of snow after 1am. Cloudy, with a low around 20. Chance of precipitation is 50%.
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 17. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
Thursday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Friday
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Grand Valley PA
 41.76°N 79.55°W (Elev. 1693 ft)
Last Update:
8:21 pm EST Nov 28, 2025
Forecast Valid:
10pm EST Nov 28, 2025-6pm EST Dec 5, 2025
 
Forecast Discussion
 
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Additional Resources

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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