Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fair

74°F

23°C

Humidity 43%
Wind Speed E 8 mph
Barometer 30.12 in (1019.8 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 21 Aug 3:56 pm EDT
Extended Forecast for

Sinclairville NY

  • Tonight

    Tonight: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 56. Southeast wind around 6 mph.

    Low: 56 °F

    Clear then
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 4pm.  Patchy fog before 8am.  Otherwise, increasing clouds, with a high near 80. South wind 7 to 9 mph.  Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Patchy Fog
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm.  Low around 57. South wind around 8 mph.  Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers

  • Sunday

    Sunday: Showers and possibly a thunderstorm.  High near 67. West wind 9 to 15 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then showers likely.  Low around 52. West wind 6 to 10 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Showers

  • Monday

    Monday: Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm.  Mostly cloudy, with a high near 67. West wind 8 to 16 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A chance of showers before 8pm.  Partly cloudy, with a low around 52. West wind 5 to 9 mph becoming light  after midnight.  Chance of precipitation is 30%.

    Low: 52 °F

    Chance
    Showers then
    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 72. West wind 5 to 10 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 56. Southeast wind around 6 mph.
Saturday
A chance of showers and thunderstorms, mainly after 4pm. Patchy fog before 8am. Otherwise, increasing clouds, with a high near 80. South wind 7 to 9 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 8pm. Low around 57. South wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and possibly a thunderstorm. High near 67. West wind 9 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 52. West wind 6 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers likely before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 67. West wind 8 to 16 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers before 8pm. Partly cloudy, with a low around 52. West wind 5 to 9 mph becoming light after midnight. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 72. West wind 5 to 10 mph.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Friday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Sinclairville NY
 42.27°N 79.27°W (Elev. 1371 ft)
3:57 pm EDT Aug 21, 2026
4pm EDT Aug 21, 2026-6pm EDT Aug 28, 2026
 
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Additional Resources

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