Severe Thunderstorms in the Midwest and Arizona; Heat Continues in the Southeast and Southwest

Thunderstorms, some severe, may lead to scattered instances of flash flooding across the Midwest and Ohio Valley and southern Arizona. The threat will shift to the Mid-Atlantic coast on Thursday. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Partly Cloudy

61°F

16°C

Humidity 100%
Wind Speed NE 7 mph
Barometer 30.03 in (1016.5 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 20 Aug 4:56 am EDT
Extended Forecast for

2 Miles WSW Greenhurst NY

  • Today

    Today: A slight chance of showers between 8am and noon.  Areas of fog before 8am.  Otherwise, cloudy, then gradual clearing during the afternoon, with a high near 75. Northeast wind 3 to 6 mph.  Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers and
    Areas Fog
    then Partly
    Sunny

  • Tonight

    Tonight: Areas of fog after 2am.  Otherwise, mostly clear, with a low around 52. North wind around 6 mph becoming calm  in the evening.

    Low: 52 °F

    Mostly Clear
    then Areas
    Fog

  • Friday

    Friday: Areas of fog before 9am.  Otherwise, sunny, with a high near 79. East wind 3 to 5 mph.

    High: 79 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. East wind around 5 mph becoming southeast in the evening.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 78. Southeast wind around 7 mph becoming southwest in the afternoon.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am.  Low around 58. Southwest wind around 7 mph.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Showers

  • Sunday

    Sunday: Showers likely, mainly after 8am.  Mostly cloudy, with a high near 72. West wind 9 to 14 mph.  Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A chance of showers.  Mostly cloudy, with a low around 53. West wind 5 to 9 mph.  Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers.  Partly sunny, with a high near 71. Chance of precipitation is 30%.

    High: 71 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers between 8am and noon. Areas of fog before 8am. Otherwise, cloudy, then gradual clearing during the afternoon, with a high near 75. Northeast wind 3 to 6 mph. Chance of precipitation is 20%.
Tonight
Areas of fog after 2am. Otherwise, mostly clear, with a low around 52. North wind around 6 mph becoming calm in the evening.
Friday
Areas of fog before 9am. Otherwise, sunny, with a high near 79. East wind 3 to 5 mph.
Friday Night
Mostly clear, with a low around 59. East wind around 5 mph becoming southeast in the evening.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Southeast wind around 7 mph becoming southwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 58. Southwest wind around 7 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 72. West wind 9 to 14 mph. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 53. West wind 5 to 9 mph. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Greenhurst NY
 42.14°N 79.35°W (Elev. 1404 ft)
3:57 am EDT Aug 20, 2026
5am EDT Aug 20, 2026-6pm EDT Aug 26, 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