Widespread Excessive Heat and Humidity in Midwest to Spread to East Coast

High pressure building across the Central and Eastern U.S. will produce a dangerous combination of heat and humidity. Heat indices from unusually high dewpoints and well above normal temperatures may reach 110 to 115 degrees. In addition, near record warm low temperatures will limit recovery from hot daytime temperatures. Read More >

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Overcast

83°F

28°C

Humidity 85%
Wind Speed W 7 mph
Barometer 29.87 in (1011.1 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 18 Jul 3:53 pm EDT
Extended Forecast for

Columbia PA

Heat Advisory July 20, 08:00pm until July 21, 08:00pm
Excessive Heat Warning July 19, 12:00pm until July 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
Excessive Heat Warning
  • This
    Afternoon

    This Afternoon: Showers and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm.  High near 86. Light north wind.  Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Showers

    High: 86 °F

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm.  Patchy fog after 2am.  Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 72. Calm wind.  Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    Patchy Fog

    Low: 72 °F

  • Friday

    Friday: Patchy fog before 11am.  Otherwise, sunny and hot, with a high near 94. Heat index values as high as 105. Calm wind becoming west 5 to 8 mph in the afternoon.

    Patchy Fog
    then Mostly
    Sunny

    High: 94 °F

  • Friday
    Night

    Friday Night: A slight chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 77. Southwest wind around 6 mph.  Chance of precipitation is 20%.

    Slight Chance
    T-storms

    Low: 77 °F

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 96. West wind 6 to 8 mph.

    Hot

    High: 96 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 79.

    Partly Cloudy

    Low: 79 °F

  • Sunday

    Sunday: Scattered showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 94. Chance of precipitation is 50%.

    Mostly Sunny
    then
    Scattered
    T-storms

    High: 94 °F

  • Sunday
    Night

    Sunday Night: Showers and thunderstorms likely, mainly after 8pm.  Mostly cloudy, with a low around 74. Chance of precipitation is 60%.

    T-storms
    Likely

    Low: 74 °F

  • Monday

    Monday: Showers and thunderstorms likely.  Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    T-storms
    Likely

    High: 84 °F

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. High near 86. Light north wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 72. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Patchy fog before 11am. Otherwise, sunny and hot, with a high near 94. Heat index values as high as 105. Calm wind becoming west 5 to 8 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 77. Southwest wind around 6 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny and hot, with a high near 96. West wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Scattered showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Chance of precipitation is 50%.
Sunday Night
Showers and thunderstorms likely, mainly after 8pm. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.
Monday
Showers and thunderstorms likely. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Columbia PA
 40.04°N 76.51°W (Elev. 299 ft)
3:37 pm EDT Jul 18, 2019
4pm EDT Jul 18, 2019-6pm EDT Jul 25, 2019
 
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