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

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.

Fair

58°F

14°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 19 Aug 2:56 am EDT
Extended Forecast for

3 Miles E Ellington NY

  • Overnight

    Overnight: Partly cloudy, with a low around 56. South wind around 5 mph.

    Low: 56 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. South wind 5 to 10 mph becoming west 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: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 53. West wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: A chance of showers, mainly between 8am and 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. 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: 75 °F

    Chance
    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Areas of fog after 2am. Otherwise, mostly clear, with a low around 50. Calm wind.

    Low: 50 °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 55. Light and variable wind.

    Low: 55 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. South wind 5 to 8 mph. Chance of precipitation is 70%.

    High: 79 °F

    Mostly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.

    Low: 56 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 56. South wind around 5 mph.
Wednesday
A chance of showers before 11am, then showers likely and possibly a thunderstorm between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 76. South wind 5 to 10 mph becoming west 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.
Wednesday Night
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 53. West wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers, mainly between 8am and 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 75. 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 50. Calm 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 55. Light and variable wind.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. South wind 5 to 8 mph. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly sunny, with a high near 72. Chance of precipitation is 30%.
Monday Night
A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Ellington NY
 42.23°N 79.07°W (Elev. 1345 ft)
Last Update:
2:33 am EDT Aug 19, 2026
Forecast Valid:
3am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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