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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Light Rain Fog/Mist

54°F

12°C

Humidity 97%
Wind Speed NW 3 mph
Barometer 29.78 in (1008.2 mb)
Dewpoint 53°F (12°C)
Visibility 5.00 mi
Last update 19 Apr 5:53 am EDT
Extended Forecast for

East Petersburg PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Today

    Today: Showers, mainly before 1pm. High near 56. Northwest wind 10 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers then
    Chance
    Showers

  • Tonight

    Tonight: Increasing clouds, with a low around 38. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Increasing
    Clouds

  • Monday

    Monday: Mostly sunny, with a high near 50. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Widespread frost after 4am. Otherwise, mostly clear, with a low around 29. North wind 3 to 8 mph.

    Low: 29 °F

    Partly Cloudy
    then Frost

  • Tuesday

    Tuesday: Sunny, with a high near 55. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 55 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 2am. Partly cloudy, with a low around 44. Chance of precipitation is 20%.

    Low: 44 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

Detailed Forecast

Today
Showers, mainly before 1pm. High near 56. Northwest wind 10 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Increasing clouds, with a low around 38. West wind 5 to 10 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 50. Northwest wind 10 to 16 mph, with gusts as high as 25 mph.
Monday Night
Widespread frost after 4am. Otherwise, mostly clear, with a low around 29. North wind 3 to 8 mph.
Tuesday
Sunny, with a high near 55. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Tuesday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 44. Chance of precipitation is 20%.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 46.
Thursday
Sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 48.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 52.
Saturday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Petersburg PA
 40.09°N 76.35°W (Elev. 381 ft)
Last Update:
2:21 am EDT Apr 19, 2026
Forecast Valid:
6am EDT Apr 19, 2026-6pm EDT Apr 25, 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