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

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Mostly Cloudy

65°F

18°C

Humidity 73%
Wind Speed W 10 mph
Barometer 29.89 in (1012.2 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Jun 6:56 pm EDT
Extended Forecast for

2 Miles SSW Youngsville PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms, mainly between 11pm and midnight. Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, partly sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 74 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 55. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 69. East wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 69 °F

    Heavy Rain

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 54. North wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Chance
    T-storms

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms, mainly between 11pm and midnight. Patchy fog before 3am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Sunday
Patchy fog before 9am. Otherwise, partly sunny, with a high near 74. Calm wind becoming northwest around 6 mph in the afternoon.
Sunday Night
A chance of showers, mainly after 5am. Mostly cloudy, with a low around 55. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm before 11am, then showers between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 69. East wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 54. North wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Mostly sunny, with a high near 74.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 77.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 56. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 40%.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Youngsville PA
 41.83°N 79.33°W (Elev. 1467 ft)
Last Update:
3:11 pm EDT Jun 20, 2026
Forecast Valid:
7pm EDT Jun 20, 2026-6pm EDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation