Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

Fair

75°F

24°C

Humidity	90%
Wind Speed	Calm
Barometer	30.08 in (1017.4 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	1 Jul 9:56 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles ENE Clymer NY

Heat Advisory July 1, 10:01pm until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 1, 10:01pm until July 3, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
Tonight
Low: 72 °F
Clear
Thursday
High: 91 °F
Hot
Thursday Night
Low: 72 °F
Slight Chance
T-storms then
Slight Chance
Showers
Friday
High: 89 °F
Mostly Sunny
Friday Night
Low: 67 °F
Slight Chance
T-storms then
Chance
T-storms
Independence Day
High: 86 °F
Chance
T-storms
Saturday Night
Low: 65 °F
Chance
T-storms
Sunday
High: 84 °F
Showers
Likely

Detailed Forecast

Tonight

Clear, with a low around 72. Southwest wind around 6 mph.

Thursday

Sunny and hot, with a high near 91. Heat index values as high as 98. West wind 7 to 11 mph.

Thursday Night

A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Increasing clouds, with a low around 72. Southwest wind around 6 mph. Chance of precipitation is 20%.

Friday

Mostly sunny, with a high near 89. Heat index values as high as 95. West wind 5 to 10 mph, with gusts as high as 20 mph.

Friday Night

A chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 67. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Independence Day

A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 86. West wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 40%.

Sunday

Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 60%.

Sunday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

Monday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.

Monday Night

Partly cloudy, with a low around 62.

Tuesday

Mostly sunny, with a high near 83.

Tuesday Night

Partly cloudy, with a low around 62.

Wednesday

Mostly sunny, with a high near 83.