National Weather Service Forecast for: Jamestown, NY
Issued by: National Weather Service Buffalo/Cheektowaga, NY
Updated: Mon, 29-Jun-2026 2:22pm EDT

Chautauqua NY
 
This
Afternoon
This Afternoon: Mostly Sunny
Mostly Sunny
Tuesday

Tuesday: Mostly Sunny
Mostly Sunny
Wednesday

Wednesday: Sunny
Sunny
Thursday

Thursday: Sunny
Sunny
Friday

Friday: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
Independence
Day
Independence Day: Showers And Thunderstorms Likely
Showers And T-Storms Likely
Sunday

Sunday: Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
Slight Chance Showers And T-Storms then Chance Showers And T-Storms
 
Hi 87 °F Hi 91 °F Hi 93 °F Hi 94 °F Hi 91 °F Hi 87 °F Hi 86 °F  
 
Tonight

Tonight: Mostly Clear
Mostly Clear
Tuesday
Night
Tuesday Night: Partly Cloudy
Partly Cloudy
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday
Night
Thursday Night: Mostly Clear then Slight Chance Showers And Thunderstorms
Mostly Clear then Slight Chance Showers And T-Storms
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 68 °F Lo 73 °F Lo 72 °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
 

This Afternoon
 
Mostly sunny, with a high near 87. South wind around 3 mph.
Tonight
 
Mostly clear, with a low around 68. South wind 1 to 5 mph.
Tuesday
 
Mostly sunny, with a high near 91. Heat index values as high as 98. Southwest wind 5 to 10 mph.
Tuesday Night
 
Partly cloudy, with a low around 73. Heat index values as high as 97. Southwest wind 3 to 8 mph.
Wednesday
 
Sunny, with a high near 93. West wind 6 to 10 mph.
Wednesday Night
 
Mostly clear, with a low around 72. Southwest wind 3 to 9 mph.
Thursday
 
Sunny, with a high near 94. West wind 3 to 12 mph.
Thursday Night
 
A slight chance of showers and thunderstorms after 2am. Mostly clear, with a low around 72. West wind 3 to 9 mph.
Friday
 
A slight 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. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Friday Night
 
A chance of showers and thunderstorms before 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Independence Day
 
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Saturday Night
 
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Sunday
 
A slight 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 30%.
Sunday Night
 
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

 

Forecast from NOAA-NWS for Jamestown, NY.