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

Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Hazardous Weather Conditions

Current conditions at

York, York Airport (KTHV)

Lat: 39.92°NLon: 76.88°WElev: 479ft.

Fair

69°F

21°C

Humidity 81%
Wind Speed Calm
Barometer 30.15 in (1020.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 30 Jun 12:53 am EDT
Extended Forecast for

Stonybrook-Wilshire PA

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

  • Overnight

    Overnight: Mostly clear, with a low around 67. Light south wind.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 71. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 71 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, then gradually becoming sunny and hot, with a high near 96. Heat index values as high as 106. Southwest wind around 6 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. Southwest wind 3 to 6 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 77.

    Low: 77 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 102.

    High: 102 °F

    Hot

  • Friday Night

    Friday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 67. Light south wind.
Tuesday
Sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 71. South wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Partly sunny, then gradually becoming sunny and hot, with a high near 96. Heat index values as high as 106. Southwest wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 76. Southwest wind 3 to 6 mph.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Clear, with a low around 77.
Friday
Sunny and hot, with a high near 102.
Friday Night
Partly cloudy, with a low around 75.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 94. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Stonybrook-Wilshire PA
 39.96°N 76.64°W (Elev. 650 ft)
Last Update:
12:03 am EDT Jun 30, 2026
Forecast Valid:
1am EDT Jun 30, 2026-6pm EDT Jul 6, 2026
 
Forecast Discussion
 
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Additional Resources

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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