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

Dangerous Heat in the West; Coastal Flooding & High Rip Current Risk into the Weekend on the East Coast; Flash Flooding Possible in the Southeast

A dangerous, record heat wave continues for the Desert Southwest and the Central Valley of California through Saturday, and the Pacific Northwest through Tuesday. Coastal flooding is expected through tonight at high tide along the Eastern Seaboard from Erin, while the high rip current risk and dangerous surf continue through the weekend. Flash flooding possible today in Georgia and South Carolina. Read More >

Current conditions at

Rochester, Greater Rochester International Airport (KROC)

Lat: 43.12°NLon: 77.68°WElev: 558ft.

A Few Clouds

68°F

20°C

Humidity 78%
Wind Speed W 3 mph
Barometer 30.10 in (1019.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 22 Aug 9:54 am EDT
Extended Forecast for

Clarkson NY

  • Today

    Today: Sunny, with a high near 80. Northwest wind 5 to 7 mph becoming northeast in the afternoon.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light and variable wind becoming south around 6 mph after midnight.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers after 2pm. Partly sunny, with a high near 85. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.

    High: 85 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 64. Southwest wind 7 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.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. West wind 10 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 74. West wind 10 to 16 mph. Chance of precipitation is 40%.

    High: 74 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 54. West wind 10 to 13 mph. Chance of precipitation is 40%.

    Low: 54 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.

    High: 70 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 80. Northwest wind 5 to 7 mph becoming northeast in the afternoon.
Tonight
Mostly clear, with a low around 61. Light and variable wind becoming south around 6 mph after midnight.
Saturday
A slight chance of showers after 2pm. Partly sunny, with a high near 85. Southwest wind 7 to 9 mph. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 64. Southwest wind 7 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.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. West wind 10 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 58. Southwest wind 8 to 10 mph. Chance of precipitation is 20%.
Monday
A chance of showers. Partly sunny, with a high near 74. West wind 10 to 16 mph. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 54. West wind 10 to 13 mph. Chance of precipitation is 40%.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.
Tuesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Clarkson NY
 43.2°N 77.95°W (Elev. 614 ft)
Last Update:
9:40 am EDT Aug 22, 2025
Forecast Valid:
10am EDT Aug 22, 2025-6pm EDT Aug 28, 2025
 
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