National Weather Service Forecast for: Jamestown, NY
Issued by: National Weather Service Buffalo/Cheektowaga, NY
Updated: Mon, 29-Jun-2026 9:57am EDT

Chautauqua NY
 
Today

Today: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Wednesday

Wednesday: Slight Chance Rain Showers then Sunny
Slight Chance Rain Showers then Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Sunny
Sunny
Independence
Day
Independence Day: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday

Sunday: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Hi 85 °F Hi 90 °F Hi 93 °F Hi 95 °F Hi 91 °F Hi 86 °F Hi 85 °F  
 
Tonight

Tonight: Partly Cloudy
Partly Cloudy
Tuesday
Night
Tuesday Night: Partly Cloudy then Slight Chance Rain Showers
Partly Cloudy then Slight Chance Rain Showers
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Mostly Clear
Mostly Clear
Friday
Night
Friday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Saturday
Night
Saturday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
Sunday
Night
Sunday Night: Chance Showers And Thunderstorms
Chance Showers And T-Storms
 
Lo 67 °F Lo 72 °F Lo 71 °F Lo 72 °F Lo 69 °F Lo 66 °F Lo 65 °F  

Heat Advisory issued June 29 at 1:14PM EDT until June 30 at 8:00PM EDT
 

Today
 
Mostly sunny, with a high near 85. Southeast wind around 5 mph.
Tonight
 
Partly cloudy, with a low around 67. South wind 1 to 5 mph.
Tuesday
 
A chance of showers and thunderstorms between 8am and 11am, then a chance of showers and thunderstorms between 11am and 2pm. Partly sunny, with a high near 90. Heat index values as high as 98. Southwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Tuesday Night
 
A slight chance of rain showers after 2am. Partly cloudy, with a low around 72. Heat index values as high as 97. Southwest wind 3 to 8 mph. Chance of precipitation is 20%.
Wednesday
 
A slight chance of rain showers before 8am. Sunny, with a high near 93. Southwest wind 6 to 10 mph. Chance of precipitation is 20%.
Wednesday Night
 
Mostly clear, with a low around 71. Southwest wind 3 to 9 mph.
Thursday
 
Sunny, with a high near 95. Southwest wind 3 to 10 mph.
Thursday Night
 
Mostly clear, with a low around 72. Southwest wind 2 to 9 mph.
Friday
 
Sunny, with a high near 91.
Friday Night
 
A chance of showers and thunderstorms after 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Independence Day
 
A chance of showers and thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Saturday Night
 
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Sunday
 
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

 

Forecast from NOAA-NWS for Jamestown, NY.