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

Heavy Rainfall Across South Texas; Heat in the West

Excessive rainfall may produce locally considerable flash flooding over parts of South Texas, the western Gulf Coast, and Lower Mississippi River Valley through Thursday. Hot temperatures will persist over central and northern California and the Pacific Northwest through today. Read More >

Current conditions at

Niagara Falls, Niagara Falls International Airport (KIAG)

Lat: 43.11°NLon: 78.94°WElev: 587ft.

A Few Clouds

67°F

19°C

Humidity 66%
Wind Speed SW 13 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 16 Jun 9:53 am EDT
Extended Forecast for

Lewiston NY

  • Today

    Today: Mostly sunny, with a high near 75. Southwest wind 14 to 16 mph, with gusts as high as 29 mph.

    High: 75 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly between 3am and 5am. Increasing clouds, with a low around 59. South wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 8am. Mostly sunny, with a high near 77. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm, mainly after 2am. Low around 62. South wind 7 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Showers
    Likely then
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 78. Breezy, with a southwest wind 17 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers before 8pm. Partly cloudy, with a low around 59. West wind 15 to 17 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Chance
    Showers then
    Mostly Clear

  • Juneteenth

    Juneteenth: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. West wind around 17 mph. Chance of precipitation is 30%.

    High: 76 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 57. West wind 10 to 13 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 75. Southwest wind 14 to 16 mph, with gusts as high as 29 mph.
Tonight
A chance of showers and thunderstorms, mainly between 3am and 5am. Increasing clouds, with a low around 59. South wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, mainly before 8am. Mostly sunny, with a high near 77. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm, mainly after 2am. Low around 62. South wind 7 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 78. Breezy, with a southwest wind 17 to 26 mph, with gusts as high as 44 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 59. West wind 15 to 17 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Juneteenth
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. West wind around 17 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 57. West wind 10 to 13 mph. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lewiston NY
 43.16°N 79.03°W (Elev. 548 ft)
Last Update:
9:33 am EDT Jun 16, 2026
Forecast Valid:
9am EDT Jun 16, 2026-6pm EDT Jun 22, 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