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

54°F

12°C

Humidity 62%
Wind Speed S 6 mph
Barometer 30.09 in (1018.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 12 May 10:53 pm EDT
Extended Forecast for

Schaefferstown PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 51. South wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 51 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 72. 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: 72 °F

    Isolated
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 3am, then a chance of showers. Low around 50. South wind 7 to 14 mph becoming northwest 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: 50 °F

    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 61. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 48. Northwest wind around 14 mph, with gusts as high as 23 mph.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 51. South wind 6 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 72. 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 50. South wind 7 to 14 mph becoming northwest 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 14 mph, with gusts as high as 22 mph.
Thursday Night
Mostly cloudy, with a low around 48. Northwest wind around 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A chance of showers. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Schaefferstown PA
 40.28°N 76.32°W (Elev. 499 ft)
Last Update:
10:51 pm EDT May 12, 2026
Forecast Valid:
11pm EDT May 12, 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