National Weather Service Forecast for: Mount Vernon NY
Issued by: National Weather Service New York, NY
Updated: 11:53 pm EDT Jun 21, 2026
 
Today

Today: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Light and variable wind becoming southeast 6 to 11 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Chance
Showers then
Showers
 Tonight

Tonight: Showers and possibly a thunderstorm. Low around 65. South wind 7 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Showers

 Tuesday

Tuesday: A 50 percent chance of showers before 2pm. Partly sunny, with a high near 80. North wind 6 to 9 mph.
Chance
Showers

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 63. Northwest wind around 7 mph.
Partly Cloudy

 Wednesday

Wednesday: Sunny, with a high near 84. Northwest wind around 7 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 64.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 85.
Mostly Sunny

 Thursday
Night
Thursday Night: A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 67.
Partly Cloudy
then Chance
Showers
 Friday

Friday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Chance
Showers then
Chance
T-storms
Hi 77 °F Lo 65 °F Hi 80 °F Lo 63 °F Hi 84 °F Lo 64 °F Hi 85 °F Lo 67 °F Hi 83 °F

Hazardous Weather Outlook
 

Today
 
 A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 77. Light and variable wind becoming southeast 6 to 11 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Showers and possibly a thunderstorm. Low around 65. South wind 7 to 11 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 A 50 percent chance of showers before 2pm. Partly sunny, with a high near 80. North wind 6 to 9 mph.
Tuesday Night
 
 Partly cloudy, with a low around 63. Northwest wind around 7 mph.
Wednesday
 
 Sunny, with a high near 84. Northwest wind around 7 mph.
Wednesday Night
 
 Mostly clear, with a low around 64.
Thursday
 
 Mostly sunny, with a high near 85.
Thursday Night
 
 A 50 percent chance of showers after 2am. Mostly cloudy, with a low around 67.
Friday
 
 A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Friday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Saturday
 
 Mostly sunny, with a high near 87.
Saturday Night
 
 Partly cloudy, with a low around 67.
Sunday
 
 Mostly sunny, with a high near 89.

 

Forecast from NOAA-NWS for Mount Vernon NY.