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Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Fair
61°F
16°C
| Humidity | 67% |
| Wind Speed | Calm |
| Barometer | 29.81 in (1009.3 mb) |
| Dewpoint | 50°F (10°C) |
| Visibility | 10.00 mi |
| Last update | 16 Jun 8:53 pm EDT |
Extended Forecast for
Northumberland PA
Tonight
Low: 55 °F
Increasing
CloudsWednesday
High: 81 °F
Partly Sunny
then Slight
Chance
T-stormsWednesday Night
Low: 62 °F
Mostly Cloudy
then Chance
ShowersThursday
High: 86 °F
Showers
LikelyThursday Night
Low: 61 °F
Partly Cloudy
Juneteenth
High: 79 °F
Mostly Sunny
Friday Night
Low: 58 °F
Mostly Clear
Saturday
High: 77 °F
Sunny
Saturday Night
Low: 57 °F
Mostly Clear
Detailed Forecast
Tonight
Increasing clouds, with a low around 55. Light south wind.
Wednesday
A slight chance of showers before 2pm, then a slight chance of showers and thunderstorms between 2pm and 3pm. Mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 9 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of showers, with thunderstorms also possible after 5am. Mostly cloudy, with a low around 62. Calm wind becoming southeast around 6 mph after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely and possibly a thunderstorm before 11am, then showers likely between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. South wind 14 to 16 mph becoming west in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 61. West wind 6 to 11 mph becoming light after midnight. Winds could gust as high as 24 mph.
Juneteenth
Mostly sunny, with a high near 79.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 80.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Tuesday
Mostly sunny, with a high near 80.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Northumberland PA
40.89°N 76.82°W (Elev. 545 ft)
40.89°N 76.82°W (Elev. 545 ft)
9:31 pm EDT Jun 16, 2026
9pm EDT Jun 16, 2026-6pm EDT Jun 23, 2026
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