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.

Partly Cloudy

86°F

30°C

Humidity 48%
Wind Speed Vrbl 6 mph
Barometer 30.11 in (1019.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 29 Jun 12:53 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

  • This Afternoon

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

    High: 87 °F

    Mostly Sunny

  • 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 89. Calm wind becoming south 5 to 9 mph in the morning.

    High: 89 °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. West wind 3 to 7 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    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: Sunny and hot, with a high near 101.

    High: 101 °F

    Hot

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. Light southeast wind.
Tonight
Partly cloudy, with a low around 66. South wind around 5 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 89. 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. West wind 3 to 7 mph.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Clear, with a low around 76.
Friday
Sunny and hot, with a high near 101.
Friday Night
Partly cloudy, with a low around 75.
Independence Day
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 97. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Columbia PA
 40.04°N 76.51°W (Elev. 299 ft)
Last Update:
12:46 pm EDT Jun 29, 2026
Forecast Valid:
1pm EDT Jun 29, 2026-6pm EDT Jul 5, 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