Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, 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.

Overcast

64°F

18°C

Humidity 93%
Wind Speed SW 7 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 8:56 am EDT
Extended Forecast for

2 Miles E Ashville NY

  • Today

    Today: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm.  Partly sunny, with a high near 77. West wind 7 to 11 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely

  • Tonight

    Tonight: Patchy fog after midnight.  Otherwise, partly cloudy, with a low around 55. West wind around 6 mph becoming calm  in the evening.

    Low: 55 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of showers before 2pm.  Patchy fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 76 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Areas of fog after 2am.  Otherwise, mostly clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Clear then
    Areas Fog

  • Friday

    Friday: Areas of fog before 9am.  Otherwise, sunny, with a high near 77. Light east wind.

    High: 77 °F

    Areas Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 57. Northeast wind around 5 mph becoming south after midnight.

    Low: 57 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 80. Southwest wind 6 to 8 mph.  Chance of precipitation is 70%.

    High: 80 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Low around 57. Southwest wind around 6 mph.  Chance of precipitation is 80%.

    Low: 57 °F

    Showers

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm.  Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely

Detailed Forecast

Today
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm. Partly sunny, with a high near 77. West wind 7 to 11 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Patchy fog after midnight. Otherwise, partly cloudy, with a low around 55. West wind around 6 mph becoming calm in the evening.
Thursday
A chance of showers before 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Areas of fog after 2am. Otherwise, mostly clear, with a low around 52. Light and variable wind.
Friday
Areas of fog before 9am. Otherwise, sunny, with a high near 77. Light east wind.
Friday Night
Partly cloudy, with a low around 57. Northeast wind around 5 mph becoming south after midnight.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 80. Southwest wind 6 to 8 mph. Chance of precipitation is 70%.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 57. Southwest wind around 6 mph. Chance of precipitation is 80%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 73.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Ashville NY
 42.12°N 79.38°W (Elev. 1309 ft)
7:57 am EDT Aug 19, 2026
9am EDT Aug 19, 2026-6pm EDT Aug 25, 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