Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

Niagara Falls, Niagara Falls International Airport (KIAG)

Lat: 43.11°NLon: 78.94°WElev: 587ft.

Overcast

85°F

29°C

Humidity 50%
Wind Speed E 7 mph
Barometer 30.09 in (1018.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 29 Jun 2:53 pm EDT
Extended Forecast for

Lewiston NY

Extreme Heat Watch July 1, 12:00pm until July 3, 08:00pm
Heat Advisory June 30, 12:00pm until June 30, 08:00pm
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory
  • Tonight

    Tonight: Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming light and variable.

    Low: 71 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms before 10am.  Mostly sunny and hot, with a high near 92. Heat index values as high as 102. Southwest wind 9 to 16 mph, with gusts as high as 28 mph.  Chance of precipitation is 20%.

    High: 92 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 76. Southwest wind 9 to 11 mph.

    Low: 76 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind 9 to 14 mph.

    High: 93 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Southwest wind 7 to 9 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95. Southwest wind 8 to 16 mph.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 75. Southwest wind 6 to 9 mph.  Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm.  Partly sunny and hot, with a high near 94. Southwest wind 5 to 10 mph.  Chance of precipitation is 50%.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Chance of precipitation is 50%.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 71. Northeast wind around 5 mph becoming light and variable.
Tuesday
A slight chance of showers and thunderstorms before 10am. Mostly sunny and hot, with a high near 92. Heat index values as high as 102. Southwest wind 9 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 76. Southwest wind 9 to 11 mph.
Wednesday
Sunny and hot, with a high near 93. Heat index values as high as 105. Southwest wind 9 to 14 mph.
Wednesday Night
Mostly clear, with a low around 75. Southwest wind 7 to 9 mph.
Thursday
Sunny and hot, with a high near 95. Southwest wind 8 to 16 mph.
Thursday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Southwest wind 6 to 9 mph. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 94. Southwest wind 5 to 10 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 50%.
Independence Day
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 40%.
Saturday Night
A chance of thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lewiston NY
 43.19°N 79.06°W (Elev. 295 ft)
2:22 pm EDT Jun 29, 2026
3pm EDT Jun 29, 2026-6pm EDT Jul 6, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database