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

Genesee County Airport (KGVQ)

Lat: 43.03°NLon: 78.17°WElev: 914ft.

Partly Cloudy

65°F

18°C

Humidity 84%
Wind Speed SW 7 mph
Barometer 29.90 in (1012.0 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 19 Aug 3:56 am EDT
Extended Forecast for

South Byron NY

  • Today

    Today: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 3pm, then a chance of showers and thunderstorms after 3pm.  Mostly cloudy, with a high near 77. West wind 7 to 11 mph.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely

  • Tonight

    Tonight: Partly cloudy, with a low around 57. West wind around 6 mph becoming calm  after midnight.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 76. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East wind around 6 mph becoming southeast after midnight.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm.  Partly sunny, with a high near 82. South wind around 8 mph.  Chance of precipitation is 70%.

    High: 82 °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 60. Southwest wind around 7 mph.  Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 76. Chance of precipitation is 50%.

    High: 76 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 3pm, then a chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 77. West wind 7 to 11 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Partly cloudy, with a low around 57. West wind around 6 mph becoming calm after midnight.
Thursday
Mostly sunny, with a high near 76. Light and variable wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 54. Calm wind.
Friday
Sunny, with a high near 78. Calm wind becoming east around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 59. East wind around 6 mph becoming southeast after midnight.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. South wind around 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 60. Southwest wind around 7 mph. Chance of precipitation is 60%.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 74.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
South Byron NY
 43.05°N 78.07°W (Elev. 656 ft)
3:57 am EDT Aug 19, 2026
4am EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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