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