Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Overcast
58°F
14°C
| Humidity | 93% |
| Wind Speed | S 7 mph |
| Barometer | 30.03 in (1017.0 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 9.00 mi |
| Last update | 16 Oct 12:53 am EDT |
Extended Forecast for
Northumberland PA
Overnight
Low: 57 °F
Showers
Friday
High: 78 °F
Showers
Friday Night
Low: 42 °F
Chance
Showers then
Mostly CloudySaturday
High: 51 °F
Gradual
ClearingSaturday Night
Low: 33 °F
Clear then
FrostSunday
High: 59 °F
Frost then
SunnySunday Night
Low: 35 °F
Clear then
Areas FrostMonday
High: 63 °F
Areas Frost
then SunnyMonday Night
Low: 38 °F
Mostly Clear
Detailed Forecast
Overnight
Showers, mainly after 3am. Low around 57. South wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 78. South wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers, mainly before 7pm. Mostly cloudy, with a low around 42. West wind 8 to 11 mph becoming north after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 51. North wind 11 to 14 mph, with gusts as high as 28 mph.
Saturday Night
Widespread frost, mainly after 4am. Otherwise, clear, with a low around 33. Calm wind.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 35.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Mostly clear, with a low around 41.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 64.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Northumberland PA
40.89°N 76.79°W (Elev. 482 ft)
40.89°N 76.79°W (Elev. 482 ft)
8:06 pm EDT Oct 15, 2026
1am EDT Oct 16, 2026-6pm EDT Oct 22, 2026
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