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

Dangerous Heat in the East; Critical Fire Weather in the 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 today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

A Few Clouds

85°F

29°C

Humidity 48%
Wind Speed SE 5 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 29 Jun 11:53 am EDT
Extended Forecast for

Lancaster PASimilar City Names

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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 87. Light east wind.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 66. South wind around 5 mph becoming calm after midnight.

    Low: 66 °F

    Mostly Clear

  • Tuesday

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

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. South wind 7 to 9 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Southwest wind 3 to 8 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 101.

    High: 101 °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 104.

    High: 104 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. Light east wind.
Tonight
Mostly clear, with a low around 66. South wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 89. Light southwest wind becoming south 5 to 10 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 70. South wind 7 to 9 mph.
Wednesday
Sunny and hot, with a high near 97. Southwest wind 3 to 8 mph.
Wednesday Night
Mostly clear, with a low around 75.
Thursday
Sunny and hot, with a high near 101.
Thursday Night
Clear, with a low around 77.
Friday
Sunny and hot, with a high near 104.
Friday Night
Partly cloudy, with a low around 76.
Independence Day
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lancaster PASimilar City Names
 40.04°N 76.3°W (Elev. 302 ft)
Last Update:
12:36 pm EDT Jun 29, 2026
Forecast Valid:
12pm EDT Jun 29, 2026-6pm EDT Jul 5, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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