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 46%
Wind Speed SE 9 mph
Barometer 30.09 in (1018.7 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 29 Jun 2:53 pm EDT
Extended Forecast for

Columbia PA

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

  • Tonight

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

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 90. Calm wind becoming south 5 to 9 mph in the morning.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. South wind 7 to 10 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 106. West wind 3 to 7 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

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

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 76.

    Low: 76 °F

    Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. Chance of precipitation is 30%.

    High: 101 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Partly cloudy, with a low around 66. South wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 90. Calm wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Mostly clear, with a low around 70. South wind 7 to 10 mph.
Wednesday
Sunny and hot, with a high near 96. Heat index values as high as 106. West wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 74. South wind 3 to 6 mph.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Clear, with a low around 76.
Friday
A chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 101. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Independence Day
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 98. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 93. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Columbia PA
 40.04°N 76.51°W (Elev. 299 ft)
Last Update:
2:21 pm EDT Jun 29, 2026
Forecast Valid:
3pm EDT Jun 29, 2026-6pm EDT Jul 6, 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