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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

A Few Clouds

65°F

18°C

Humidity 68%
Wind Speed N 9 mph
Barometer 30.19 in (1022.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 28 Aug 11:56 am EDT
Extended Forecast for

Jamestown NYSimilar City Names

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 72. North wind around 8 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 48. Light north wind.

    Low: 48 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55. Light and variable wind.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 82. Light and variable wind becoming west 5 to 8 mph in the morning.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 85. Southwest wind 3 to 7 mph.

    High: 85 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 67. Light southwest wind. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 72. North wind around 8 mph.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 48. Light north wind.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 78. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 55. Light and variable wind.
Sunday
Partly sunny, with a high near 82. Light and variable wind becoming west 5 to 8 mph in the morning.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, with a high near 85. Southwest wind 3 to 7 mph.
Monday Night
A chance of showers, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 67. Light southwest wind. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 2pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Tuesday Night
A chance of thunderstorms before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Jamestown NYSimilar City Names
 42.09°N 79.24°W (Elev. 1430 ft)
Last Update:
9:57 am EDT Aug 28, 2026
Forecast Valid:
12pm EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
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Additional Resources

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Chance of Precipitation