National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 >

Hazardous Weather Conditions

Current conditions at

York, York Airport (KTHV)

Lat: 39.92°NLon: 76.88°WElev: 479ft.

Fair

86°F

30°C

Humidity 55%
Wind Speed S 8 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 30 Jun 6:53 pm EDT
Extended Forecast for

3 Miles SSW Glen Rock PA

Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 1, 12:00pm until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning

  • Tonight

    Tonight: Mostly clear, with a low around 70. South wind around 9 mph, with gusts as high as 20 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94. Heat index values as high as 103. West wind around 6 mph.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. Southwest wind 3 to 5 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming west around 6 mph in the afternoon.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.

    Low: 78 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Chance of precipitation is 40%.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.

    Low: 72 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 70. South wind around 9 mph, with gusts as high as 20 mph.
Wednesday
Sunny and hot, with a high near 94. Heat index values as high as 103. West wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 75. Southwest wind 3 to 5 mph.
Thursday
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind becoming west around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.
Friday
Sunny and hot, with a high near 99.
Friday Night
Partly cloudy, with a low around 76.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Monday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Glen Rock PA
 39.75°N 76.76°W (Elev. 758 ft)
Last Update:
2:21 pm EDT Jun 30, 2026
Forecast Valid:
7pm EDT Jun 30, 2026-6pm EDT Jul 7, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation