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.

Partly Cloudy

58°F

14°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.95 in (1014.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 19 Aug 4:56 am EDT
Extended Forecast for

4 Miles NNW Youngsville PA

  • Today

    Today: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 77. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55. Light and variable wind.

    Low: 55 °F

    Patchy Fog

  • Thursday

    Thursday: A chance of showers, mainly between 8am and 2pm. Cloudy, then gradual clearing during the afternoon, with a high near 76. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 76 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear then
    Patchy Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 79. Light east wind.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 70%.

    High: 79 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 77. South wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55. Light and variable wind.
Thursday
A chance of showers, mainly between 8am and 2pm. Cloudy, then gradual clearing during the afternoon, with a high near 76. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Patchy fog before 4am, then patchy fog after 5am. Otherwise, mostly clear, with a low around 52. Light and variable wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 79. Light east wind.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Youngsville PA
 41.9°N 79.35°W (Elev. 1677 ft)
Last Update:
6:11 am EDT Aug 19, 2026
Forecast Valid:
6am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation