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

62°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.12 in (1019.9 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 Jun 7:53 am EDT
Extended Forecast for

Sunbury PA

  • Today

    Today: A slight chance of showers. Cloudy, with a high near 70. Light and variable wind. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers, mainly after 1am. Patchy fog after 1am. Otherwise, cloudy, with a low around 61. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers likely. Patchy fog before 7am. Otherwise, cloudy, with a high near 74. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 74 °F

    Showers
    Likely and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Cloudy, with a low around 68. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Juneteenth

    Juneteenth: A chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 89. Chance of precipitation is 70%.

    High: 89 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers. Cloudy, with a high near 70. Light and variable wind. Chance of precipitation is 20%.
Tonight
A chance of showers, mainly after 1am. Patchy fog after 1am. Otherwise, cloudy, with a low around 61. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Showers likely. Patchy fog before 7am. Otherwise, cloudy, with a high near 74. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Cloudy, with a low around 68. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.
Juneteenth
A chance of thunderstorms before 8am, then a chance of showers and thunderstorms between 8am and noon, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 89. Chance of precipitation is 70%.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 86.
Saturday Night
Partly cloudy, with a low around 67.
Sunday
Mostly sunny and hot, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
7:15 am EDT Jun 16, 2025
Forecast Valid:
8am EDT Jun 16, 2025-6pm EDT Jun 22, 2025
 
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