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 from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

Jamestown, Chautauqua County/Jamestown Airport (KJHW)

Lat: 42.15°NLon: 79.27°WElev: 1722ft.

A Few Clouds

76°F

24°C

Humidity 97%
Wind Speed SW 7 mph
Barometer 30.05 in (1016.4 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index75°F (24°C)
Last update 1 Jul 12:56 am EDT
Extended Forecast for

2 Miles E Chandlers Valley PA

Heat Advisory July 1, 01:38am until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 1, 01:38am until July 3, 08:00pm

    NOW until 8:00pm Fri

    Heat Advisory

  • Overnight

    Low: 71 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: Isolated showers between 8am and 11am.  Mostly sunny and hot, with a high near 93. Heat index values as high as 101. West wind around 8 mph.  Chance of precipitation is 20%.

    High: 93 °F

    Isolated
    Showers then
    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 72. Southwest wind 3 to 5 mph.

    Low: 72 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 94. Heat index values as high as 100. West wind 5 to 9 mph, with gusts as high as 20 mph.

    High: 94 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72. West wind around 5 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm.  Sunny, with a high near 91. Chance of precipitation is 20%.

    High: 91 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms after 8pm.  Mostly cloudy, with a low around 68. Chance of precipitation is 30%.

    Low: 68 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: Showers likely, with thunderstorms also possible after 2pm.  Mostly cloudy, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Showers
    Likely

Detailed Forecast

Overnight
A slight chance of showers before 2am. Partly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 20%.
Wednesday
Isolated showers between 8am and 11am. Mostly sunny and hot, with a high near 93. Heat index values as high as 101. West wind around 8 mph. Chance of precipitation is 20%.
Wednesday Night
Clear, with a low around 72. Southwest wind 3 to 5 mph.
Thursday
Sunny and hot, with a high near 94. Heat index values as high as 100. West wind 5 to 9 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 72. West wind around 5 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 91. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Independence Day
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 60%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
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 and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Monday Night
A chance of thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 84.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Chandlers Valley PA
 41.96°N 79.26°W (Elev. 1696 ft)
1:21 am EDT Jul 1, 2026
1am EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database