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

Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Dansville, Dansville Municipal Airport (KDSV)

Lat: 42.57°NLon: 77.71°WElev: 659ft.

Fair

75°F

24°C

Humidity 76%
Wind Speed SE 9 mph
Barometer 30.07 in (1018.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 30 Jun 7:54 am EDT
Extended Forecast for

Gainesville NY

Heat Advisory June 30, 12:00pm until June 30, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A chance of showers and thunderstorms, mainly between 9am and 1pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Southwest wind 7 to 11 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Southwest wind around 8 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 91. Heat index values as high as 100. West wind 9 to 11 mph, with gusts as high as 21 mph.

    High: 91 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73. Southwest wind around 8 mph.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 92. West wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 92 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73. West wind 9 to 11 mph.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. West wind 8 to 11 mph. Chance of precipitation is 30%.

    High: 88 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. West wind 6 to 8 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly between 9am and 1pm. Mostly sunny, with a high near 88. Heat index values as high as 95. Southwest wind 7 to 11 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Partly cloudy, with a low around 74. Southwest wind around 8 mph.
Wednesday
Sunny and hot, with a high near 91. Heat index values as high as 100. West wind 9 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 73. Southwest wind around 8 mph.
Thursday
Sunny and hot, with a high near 92. West wind 9 to 13 mph, with gusts as high as 23 mph.
Thursday Night
Mostly clear, with a low around 73. West wind 9 to 11 mph.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. West wind 8 to 11 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. West wind 6 to 8 mph. Chance of precipitation is 40%.
Independence Day
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Saturday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gainesville NY
 42.65°N 78.14°W (Elev. 1660 ft)
Last Update:
7:57 am EDT Jun 30, 2026
Forecast Valid:
8am EDT Jun 30, 2026-6pm EDT Jul 6, 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