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

Excessive Rainfall and Potential Tropical Cyclone in the South; Severe Thunderstorms in the Midwest

Excessive rainfall may produce locally considerable flash flooding over parts of the northwestern Gulf Coast, lower Mississippi River Valley, and Deep South through Thursday. Potential Tropical Cyclone One is forecast to become a tropical storm (Arthur) as it moves along or just off the northwestern Gulf coast through Wednesday. An outbreak of severe weather is forecast in the Midwest Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Genesee County Airport (KGVQ)

Lat: 43.03°NLon: 78.17°WElev: 914ft.

Fair

67°F

19°C

Humidity 63%
Wind Speed SW 9 mph
Barometer 29.71 in (1005.5 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Jun 9:56 am EDT
Extended Forecast for

Lyndonville NY

  • Today

    Today: Partly sunny, with a high near 76. Southwest wind 9 to 14 mph.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 62. South wind 7 to 16 mph becoming southeast in the evening. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 81. Breezy, with a west wind 20 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Showers
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 60. West wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 78. Breezy, with a west wind 15 to 21 mph, with gusts as high as 31 mph.

    High: 78 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. West wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. West wind around 16 mph, with gusts as high as 26 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. West wind 6 to 8 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 76. Southwest wind 9 to 14 mph.
Tonight
Showers and possibly a thunderstorm, mainly before 5am, then a chance of showers and thunderstorms after 5am. Low around 62. South wind 7 to 16 mph becoming southeast in the evening. Winds could gust as high as 33 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 81. Breezy, with a west wind 20 to 23 mph, with gusts as high as 44 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 60. West wind 14 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
Sunny, with a high near 78. Breezy, with a west wind 15 to 21 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 58. West wind 11 to 13 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 77. West wind around 16 mph, with gusts as high as 26 mph.
Saturday Night
Partly cloudy, with a low around 58. West wind 6 to 8 mph.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Monday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lyndonville NY
 43.34°N 78.38°W (Elev. 299 ft)
Last Update:
9:57 am EDT Jun 17, 2026
Forecast Valid:
10am EDT Jun 17, 2026-6pm EDT Jun 23, 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