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.

Fair

62°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 29.96 in (1014.2 mb)
Dewpoint 59°F (15°C)
Visibility 7.00 mi
Last update 5 Jun 11:53 pm EDT
Extended Forecast for

Sunbury PA

  • Overnight

    Overnight: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Partly sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Mostly Sunny
    then Severe
    Thunderstorms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 88. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 60. North wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 20 mph.

    Low: 60 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 64. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly after 3pm. Some of the storms could be severe. Partly sunny, with a high near 88. Light southwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe and produce heavy rainfall. Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 88. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.
Sunday Night
Clear, with a low around 60. North wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 86.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 93. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny and hot, with a high near 95. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Sunbury PA
 40.87°N 76.79°W (Elev. 482 ft)
Last Update:
11:07 pm EDT Jun 5, 2026
Forecast Valid:
12am EDT Jun 6, 2026-6pm EDT Jun 12, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation