Severe Thunderstorms in the Central Plains and Lower Missouri Valley; Heat Continues in the Southeast and Southwest

Severe thunderstorms capable of large hail and damaging wind gusts are forecast to impact the central Plains into the Lower Missouri Valley through this afternoon. Dangerous heat persists across the southern Plains, Southeast U.S. and Puerto Rico this week, and will return to the Southwest today. Read More >

Current conditions at

Genesee County Airport (KGVQ)

Lat: 43.03°NLon: 78.17°WElev: 914ft.

Fair

74°F

23°C

Humidity 48%
Wind Speed NW 9 mph
Barometer 29.95 in (1013.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Aug 4:56 pm EDT
Extended Forecast for

4 Miles WNW Lyndonville NY

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 5am.  Mostly cloudy, with a low around 64. Light and variable wind becoming southwest 5 to 9 mph in the evening.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 10am.  Partly sunny, with a high near 77. Southwest wind 9 to 11 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Patchy fog after 2am.  Otherwise, mostly clear, with a low around 59. Northwest wind around 6 mph.

    Low: 59 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, sunny, with a high near 78. West wind 3 to 7 mph.

    High: 78 °F

    Patchy Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Light and variable wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 78. East wind 3 to 7 mph.

    High: 78 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. South wind around 7 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 80. South wind 6 to 8 mph.  Chance of precipitation is 50%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am.  Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms, mainly after 5am. Mostly cloudy, with a low around 64. Light and variable wind becoming southwest 5 to 9 mph in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and thunderstorms likely, mainly before 10am. Partly sunny, with a high near 77. Southwest wind 9 to 11 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 59. Northwest wind around 6 mph.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 78. West wind 3 to 7 mph.
Thursday Night
Mostly clear, with a low around 58. Light and variable wind.
Friday
Sunny, with a high near 78. East wind 3 to 7 mph.
Friday Night
Partly cloudy, with a low around 60. South wind around 7 mph.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. South wind 6 to 8 mph. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Lyndonville NY
 43.35°N 78.46°W (Elev. 299 ft)
3:57 pm EDT Aug 18, 2026
5pm EDT Aug 18, 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