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

Severe Thunderstorms in the Upper Midwest; Heat Continues in the Southwest

Scattered severe thunderstorms may produce damaging winds, large hail, a tornado or two, and heavy rain across parts of the Upper Midwest, mainly this evening through Saturday. Very hot temperatures will continue through today across the Desert Southwest, which could break daily high temperature records. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fog/Mist

63°F

17°C

Humidity 93%
Wind Speed S 8 mph
Barometer 30.28 in (1025.0 mb)
Dewpoint 61°F (16°C)
Visibility 6.00 mi
Last update 8 Aug 7:56 am EDT
Extended Forecast for

Sinclairville NY

  • Today

    Today: Sunny, with a high near 81. South wind around 8 mph.

    High: 81 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. South wind around 6 mph.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, sunny, with a high near 86. South wind around 6 mph.

    High: 86 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. Calm wind becoming south around 6 mph after midnight.

    Low: 63 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind around 6 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 64. Calm wind becoming south around 6 mph after midnight.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. South wind around 6 mph becoming southwest in the afternoon.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 66. Calm wind becoming south around 6 mph after midnight.

    Low: 66 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 81. South wind around 8 mph.
Tonight
Patchy fog after 2am. Otherwise, mostly clear, with a low around 60. South wind around 6 mph.
Saturday
Patchy fog before 9am. Otherwise, sunny, with a high near 86. South wind around 6 mph.
Saturday Night
Mostly clear, with a low around 63. Calm wind becoming south around 6 mph after midnight.
Sunday
Sunny, with a high near 87. South wind around 6 mph.
Sunday Night
Mostly clear, with a low around 64. Calm wind becoming south around 6 mph after midnight.
Monday
Sunny, with a high near 88. South wind around 6 mph becoming southwest in the afternoon.
Monday Night
Mostly clear, with a low around 66. Calm wind becoming south around 6 mph after midnight.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Wednesday Night
A chance of thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sinclairville NY
 42.27°N 79.27°W (Elev. 1371 ft)
Last Update:
7:36 am EDT Aug 8, 2025
Forecast Valid:
8am EDT Aug 8, 2025-6pm EDT Aug 14, 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