Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Fog/Mist
60°F
16°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 29.88 in (1011.4 mb) |
| Dewpoint | 60°F (16°C) |
| Visibility | 5.00 mi |
| Last update | 14 Oct 1:53 am EDT |
Extended Forecast for
Northumberland PA
Overnight
Low: 59 °F
Clear
Wednesday
High: 77 °F
Isolated
Showers then
Mostly CloudyWednesday Night
Low: 51 °F
Mostly Cloudy
Thursday
High: 66 °F
Mostly Sunny
Thursday Night
Low: 55 °F
Chance
Showers then
ShowersFriday
High: 73 °F
Showers
Friday Night
Low: 40 °F
Showers then
Mostly CloudySaturday
High: 51 °F
Sunny
Saturday Night
Low: 33 °F
Clear then
Frost
Detailed Forecast
Overnight
Clear, with a low around 59. Southwest wind 3 to 5 mph.
Wednesday
Isolated showers between 8am and noon. Increasing clouds, with a high near 77. West wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 51. North wind around 7 mph.
Thursday
Mostly sunny, with a high near 66. Light and variable wind.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 55. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 73. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers before 8pm. Low around 40. Chance of precipitation is 80%.
Saturday
Sunny, with a high near 51.
Saturday Night
Widespread frost, mainly after 5am. Otherwise, clear, with a low around 33.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 60.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Partly sunny, with a high near 66.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Northumberland PA
40.91°N 76.79°W (Elev. 699 ft)
40.91°N 76.79°W (Elev. 699 ft)
2:41 am EDT Oct 14, 2026
2am EDT Oct 14, 2026-6pm EDT Oct 20, 2026
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