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

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

50°F

10°C

Humidity 83%
Wind Speed N 5 mph
Barometer 30.33 in (1027.1 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 22 May 6:53 am EDT
Extended Forecast for

Lewisburg PA

  • Today

    Today: Cloudy, with a high near 67. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.

    High: 67 °F

    Cloudy

  • Tonight

    Tonight: Rain likely, mainly after 4am. Cloudy, with a low around 46. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Slight Chance
    Rain then
    Rain Likely

  • Saturday

    Saturday: Rain. High near 53. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 53 °F

    Rain

  • Saturday Night

    Saturday Night: Rain before 2am, then showers after 2am. Patchy fog after 2am. Low around 47. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 47 °F

    Rain and
    Patchy Fog

  • Sunday

    Sunday: Showers, mainly before 2pm. Patchy fog before 11am. High near 67. Light southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Showers and
    Patchy Fog

  • Sunday Night

    Sunday Night: A slight chance of showers between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers and
    Patchy Fog

  • Memorial Day

    Memorial Day: Showers likely, mainly after 8am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Showers
    Likely and
    Patchy Fog

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 82.

    High: 82 °F

    Mostly Cloudy

Detailed Forecast

Today
Cloudy, with a high near 67. Light and variable wind becoming southeast 5 to 7 mph in the afternoon.
Tonight
Rain likely, mainly after 4am. Cloudy, with a low around 46. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain. High near 53. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Saturday Night
Rain before 2am, then showers after 2am. Patchy fog after 2am. Low around 47. East wind around 6 mph becoming calm in the evening. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers, mainly before 2pm. Patchy fog before 11am. High near 67. Light southeast wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
A slight chance of showers between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 55. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Memorial Day
Showers likely, mainly after 8am. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 57.
Tuesday
Mostly cloudy, with a high near 82.
Tuesday Night
Mostly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 84.
Wednesday Night
Mostly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewisburg PA
 40.96°N 76.89°W (Elev. 499 ft)
Last Update:
2:39 am EDT May 22, 2026
Forecast Valid:
7am EDT May 22, 2026-6pm EDT May 28, 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