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.

Overcast

64°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 30.03 in (1016.6 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Aug 2:56 am EDT
Extended Forecast for

Irvine PA

  • Overnight

    Overnight: Areas of fog. Otherwise, mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Areas Fog

  • Thursday

    Thursday: A chance of showers, mainly before 2pm. Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. Light east wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 78 °F

    Chance
    Showers and
    Areas Fog

  • Thursday Night

    Thursday Night: Areas of fog after 3am. Otherwise, mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear
    then Areas
    Fog

  • Friday

    Friday: Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light southeast wind.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Patchy fog after 2am. Otherwise, mostly clear, with a low around 59. Calm wind. Chance of precipitation is 20%.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A slight chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Patchy Fog
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely and
    Patchy Fog

  • Sunday

    Sunday: Showers likely, mainly between 8am and 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.

    High: 76 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 57. Calm wind.
Thursday
A chance of showers, mainly before 2pm. Areas of fog before 10am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 78. Light east wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Areas of fog after 3am. Otherwise, mostly clear, with a low around 53. Calm wind.
Friday
Patchy fog before 9am. Otherwise, sunny, with a high near 82. Light southeast wind.
Friday Night
A slight chance of showers after 2am. Patchy fog after 2am. Otherwise, mostly clear, with a low around 59. Calm wind. Chance of precipitation is 20%.
Saturday
A slight chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Patchy fog before 7am. Otherwise, partly sunny, with a high near 81. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 11pm, then showers likely between 11pm and 2am. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
Showers likely, mainly between 8am and 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 70%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Irvine PA
 41.84°N 79.21°W (Elev. 1217 ft)
Last Update:
2:21 am EDT Aug 20, 2026
Forecast Valid:
3am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
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