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.

A Few Clouds

89°F

32°C

Humidity	57%
Wind Speed	W 15 mph
Barometer	30.06 in (1016.6 mb)
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Heat Index	96°F (36°C)
Last update	1 Jul 4:56 pm EDT

More Information:

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

Extended Forecast for

Leon NY

Heat Advisory July 1, 05:24pm until July 3, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 1, 05:24pm 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
Partly Cloudy
Friday
High: 89 °F
Slight Chance
T-storms
Friday Night
Low: 67 °F
Chance
T-storms
Independence Day
High: 85 °F
Chance
T-storms then
Showers
Likely
Saturday Night
Low: 65 °F
Showers
Likely then
Chance
T-storms
Sunday
High: 84 °F
Chance
T-storms then
Showers
Likely

Detailed Forecast

Tonight

Clear, with a low around 72. Southwest wind 6 to 10 mph.

Thursday

Sunny and hot, with a high near 91. Heat index values as high as 95. West wind 6 to 11 mph.

Thursday Night

Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph.

Friday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. West wind 5 to 10 mph. Chance of precipitation is 20%.

Friday Night

A chance of showers and thunderstorms, mainly after 2am. Partly cloudy, with a low around 67. Southwest wind 3 to 6 mph. Chance of precipitation is 40%. 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, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. West wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 65. Light and variable wind. Chance of precipitation is 60%.

Sunday

A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 84. Light and variable wind becoming southwest around 5 mph in the morning. Chance of precipitation is 70%.

Sunday Night

Showers likely, mainly before 8pm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

Monday

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

Monday Night

Mostly cloudy, with a low around 62.

Tuesday

A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.

Tuesday Night

A chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near 83.