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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Niagara Falls, Niagara Falls International Airport (KIAG)

Lat: 43.11°NLon: 78.94°WElev: 587ft.

Fair

54°F

12°C

Humidity 93%
Wind Speed Calm
Barometer 30.19 in (1022.5 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 29 Aug 4:53 am EDT
Extended Forecast for

Grand Island NY

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Light south wind becoming southwest 8 to 13 mph in the morning.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. South wind 3 to 6 mph.

    Low: 60 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. Southwest wind 5 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: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 63. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. High near 79. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 66. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 83. Southwest wind 5 to 14 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 68. Southwest wind 5 to 7 mph. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    T-storms

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 78. Light south wind becoming southwest 8 to 13 mph in the morning.
Tonight
Mostly cloudy, with a low around 60. South wind 3 to 6 mph.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 78. Southwest wind 5 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.
Sunday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 63. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers, with thunderstorms also possible after 2pm. High near 79. Light and variable wind becoming southeast around 6 mph in the morning. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 66. Southeast wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers. Mostly cloudy, with a high near 83. Southwest wind 5 to 14 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 68. Southwest wind 5 to 7 mph. Chance of precipitation is 50%.
Wednesday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Chance of precipitation is 40%.
Wednesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grand Island NY
 43.03°N 78.97°W (Elev. 597 ft)
Last Update:
3:57 am EDT Aug 29, 2026
Forecast Valid:
5am EDT Aug 29, 2026-6pm EDT Sep 4, 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