National Weather Service Forecast for: Tonawanda NY
Issued by: National Weather Service Buffalo, NY
Updated: 9:57 pm EDT Jun 18, 2026
 
Tonight

Tonight: Mostly clear, with a low around 56. West wind 14 to 17 mph.
Mostly Clear

 Juneteenth

Juneteenth: A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 71. West wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunny then
Chance
Showers
 Friday
Night
Friday Night: A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradually becoming clear, with a low around 54. West wind 7 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Mostly Clear
 Saturday

Saturday: Sunny, with a high near 74. West wind 8 to 10 mph.
Sunny

 Saturday
Night
Saturday Night: Partly cloudy, with a low around 55. West wind around 6 mph becoming calm in the evening.
Partly Cloudy

 Sunday

Sunday: Mostly sunny, with a high near 76. Calm wind becoming west around 6 mph in the afternoon.
Mostly Sunny

 Sunday
Night
Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 56. Light and variable wind. Chance of precipitation is 40%.
Mostly Cloudy
then Chance
Showers
 Monday

Monday: A chance of showers. Mostly cloudy, with a high near 73. Northeast wind 5 to 8 mph. Chance of precipitation is 50%.
Chance
Showers
 Monday
Night
Monday Night: Mostly cloudy, with a low around 56.
Mostly Cloudy
Lo 56 °F Hi 71 °F Lo 54 °F Hi 74 °F Lo 55 °F Hi 76 °F Lo 56 °F Hi 73 °F Lo 56 °F

Beach Hazards Statement
Hazardous Weather Outlook
 

Tonight
 
 Mostly clear, with a low around 56. West wind 14 to 17 mph.
Juneteenth
 
 A chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 71. West wind 11 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
 
 A chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, then gradually becoming clear, with a low around 54. West wind 7 to 15 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Sunny, with a high near 74. West wind 8 to 10 mph.
Saturday Night
 
 Partly cloudy, with a low around 55. West wind around 6 mph becoming calm in the evening.
Sunday
 
 Mostly sunny, with a high near 76. Calm wind becoming west around 6 mph in the afternoon.
Sunday Night
 
 A chance of showers after 2am. Mostly cloudy, with a low around 56. Light and variable wind. Chance of precipitation is 40%.
Monday
 
 A chance of showers. Mostly cloudy, with a high near 73. Northeast wind 5 to 8 mph. Chance of precipitation is 50%.
Monday Night
 
 Mostly cloudy, with a low around 56.
Tuesday
 
 Mostly sunny, with a high near 76.
Tuesday Night
 
 Partly cloudy, with a low around 57.
Wednesday
 
 Mostly sunny, with a high near 76.
Wednesday Night
 
 A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Thursday
 
 A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 50%.

 

Forecast from NOAA-NWS for Tonawanda NY.