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

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Overcast

30°F

-1°C

Humidity 79%
Wind Speed NW 8 mph
Barometer 29.91 in (1013.2 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 18 Jan 2:53 pm EST
Extended Forecast for

Mount Gretna PA

Winter Weather Advisory January 18, 03:12pm until January 18, 06:00pm
Click here for hazard details and duration
...
  •  
    Winter Weather Advisory January 18, 03:12pm until January 18, 06:00pm

    NOW until 6:00pm Sun

    Winter Weather Advisory

  • Tonight

    Low: 17 °F

    Decreasing
    Clouds

  • M.L.King Day

    M.L.King Day: Increasing clouds, with a high near 32. Southwest wind 6 to 16 mph, with gusts as high as 34 mph.

    High: 32 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. Wind chill values as low as zero. West wind 13 to 18 mph, with gusts as high as 32 mph.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 20. Wind chill values as low as -5. West wind 11 to 14 mph, with gusts as high as 29 mph.

    High: 20 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 9. West wind 5 to 7 mph becoming southwest after midnight.

    Low: 9 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 17. West wind 6 to 10 mph.
M.L.King Day
Increasing clouds, with a high near 32. Southwest wind 6 to 16 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a low around 11. Wind chill values as low as zero. West wind 13 to 18 mph, with gusts as high as 32 mph.
Tuesday
Sunny, with a high near 20. Wind chill values as low as -5. West wind 11 to 14 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 9. West wind 5 to 7 mph becoming southwest after midnight.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 16.
Friday
Mostly sunny, with a high near 29.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
A chance of snow showers. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Sunday
A chance of snow showers. Partly sunny, with a high near 20. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Gretna PA
 40.26°N 76.47°W (Elev. 699 ft)
Last Update:
1:39 pm EST Jan 18, 2026
Forecast Valid:
3pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation