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

82°F

28°C

Humidity 53%
Wind Speed NW 12 mph
Barometer 30.13 in (1019.7 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 16 Aug 4:56 pm EDT
Extended Forecast for

5 Miles NNW Grand Valley PA

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Light and variable wind.

    Low: 63 °F

    Partly Cloudy

  • Sunday

    Sunday: Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 82. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 82 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57. Northeast wind around 6 mph.

    Low: 57 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 82. Northeast wind around 6 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 61. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 61 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. Light and variable wind.
Sunday
Showers and thunderstorms likely before 2pm, then showers likely and possibly a thunderstorm between 2pm and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 82. Light and variable wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Mostly cloudy, with a low around 57. Northeast wind around 6 mph.
Monday
Mostly sunny, with a high near 82. Northeast wind around 6 mph.
Monday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 61. Light and variable wind becoming southeast around 5 mph after midnight. Chance of precipitation is 20%.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NNW Grand Valley PA
 41.79°N 79.58°W (Elev. 1696 ft)
Last Update:
1:27 pm EDT Aug 16, 2025
Forecast Valid:
5pm EDT Aug 16, 2025-6pm EDT Aug 23, 2025
 
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