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.

Partly Cloudy

38°F

3°C

Humidity 51%
Wind Speed Vrbl 6 mph
Barometer 30.20 in (1023.2 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 12 Jan 11:53 am EST
Extended Forecast for

Sunbury PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 40. West wind around 8 mph, with gusts as high as 24 mph.

    High: 40 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 28. Light southwest wind.

    Low: 28 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44. Calm wind becoming south around 6 mph in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. South wind 3 to 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 46. Southwest wind 3 to 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 4am, then rain and snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday

    Thursday: Snow likely, possibly mixed with rain before 1pm, then a chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 60%.

    High: 35 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of snow before 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 40. West wind around 8 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 28. Light southwest wind.
Tuesday
Mostly sunny, with a high near 44. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 36. South wind 3 to 6 mph.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. Southwest wind 3 to 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain likely before 4am, then rain and snow likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
Snow likely, possibly mixed with rain before 1pm, then a chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 60%.
Thursday Night
A chance of snow before 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 31.
Friday Night
Partly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Partly sunny, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
7:34 am EST Jan 12, 2026
Forecast Valid:
12pm EST Jan 12, 2026-6pm EST Jan 18, 2026
 
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Additional Resources

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Chance of Precipitation