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

52°F

11°C

Humidity 69%
Wind Speed S 7 mph
Barometer 30.05 in (1018.2 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 16 May 7:56 am EDT
Extended Forecast for

4 Miles NNW Grand Valley PA

  • Today

    Today: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 76. South wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Sunny then
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 57. West wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Light southwest wind. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers then
    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers after 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Chance
    T-storms then
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 8am. High near 75. Chance of precipitation is 80%.

    High: 75 °F

    Showers

Detailed Forecast

Today
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 76. South wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 57. West wind around 6 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 81. Light southwest wind. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 59. Calm wind becoming south around 5 mph after midnight. Chance of precipitation is 30%.
Monday
Sunny, with a high near 89. Southwest wind 6 to 9 mph, with gusts as high as 21 mph.
Monday Night
Mostly clear, with a low around 65.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms, then showers after 2am. Low around 62. Chance of precipitation is 80%.
Wednesday
Showers, with thunderstorms also possible after 8am. High near 75. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 44.
Thursday
Partly sunny, with a high near 63.
Thursday Night
Partly cloudy, with a low around 44.
Friday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNW Grand Valley PA
 41.77°N 79.58°W (Elev. 1696 ft)
Last Update:
8:05 am EDT May 16, 2026
Forecast Valid:
8am EDT May 16, 2026-6pm EDT May 22, 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