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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Fair

55°F

13°C

Humidity 67%
Wind Speed S 8 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 12 May 11:53 pm EDT
Extended Forecast for

Schaefferstown PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 50. South wind 7 to 9 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 71. South wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Isolated
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 49. South wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 49 °F

    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 61. Northwest wind 11 to 15 mph, with gusts as high as 22 mph.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. Northwest wind 13 to 15 mph, with gusts as high as 23 mph.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 50. South wind 7 to 9 mph, with gusts as high as 20 mph.
Wednesday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 71. South wind 11 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 49. South wind 7 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Mostly sunny, with a high near 61. Northwest wind 11 to 15 mph, with gusts as high as 22 mph.
Thursday Night
Mostly cloudy, with a low around 47. Northwest wind 13 to 15 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A chance of showers. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Schaefferstown PA
 40.3°N 76.28°W (Elev. 659 ft)
Last Update:
10:51 pm EDT May 12, 2026
Forecast Valid:
12am EDT May 13, 2026-6pm EDT May 19, 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