Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fair

72°F

22°C

Humidity 66%
Wind Speed W 5 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 13 Aug 6:56 pm EDT
Extended Forecast for

3 Miles WNW Sinclairville NY

  • Tonight

    Tonight: Patchy fog after 5am.  Otherwise, mostly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 59 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am.  Otherwise, mostly sunny, with a high near 78. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 56. Light and variable wind.

    Low: 56 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79. East wind 3 to 6 mph.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely, with thunderstorms also possible after 5am.  Mostly cloudy, with a low around 62. Light and variable wind becoming south around 6 mph after midnight.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 78. South wind 9 to 14 mph becoming west in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 78 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 61. West wind 3 to 8 mph.  Chance of precipitation is 40%.

    Low: 61 °F

    Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 75. Northwest wind 3 to 8 mph.

    High: 75 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 59. Northwest wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming north 5 to 7 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 56. Light and variable wind.
Saturday
Mostly sunny, with a high near 79. East wind 3 to 6 mph.
Saturday Night
Showers likely, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 62. Light and variable wind becoming south around 6 mph after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm. High near 78. South wind 9 to 14 mph becoming west in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West wind 3 to 8 mph. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 75. Northwest wind 3 to 8 mph.
Monday Night
Mostly clear, with a low around 55.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
A chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WNW Sinclairville NY
 42.29°N 79.32°W (Elev. 1430 ft)
4:15 pm EDT Aug 13, 2026
7pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026
 
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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