Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Fair
63°F
17°C
| Humidity | 58% |
| Wind Speed | Calm |
| Barometer | 30.17 in (1021.6 mb) |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Last update | 15 Oct 2:53 pm EDT |
Extended Forecast for
Northumberland PA
Tonight
Low: 57 °F
Mostly Cloudy
then ShowersFriday
High: 77 °F
Showers
Likely then
ShowersFriday Night
Low: 42 °F
Chance
Showers then
Mostly CloudySaturday
High: 50 °F
Gradual
ClearingSaturday Night
Low: 33 °F
Clear then
FrostSunday
High: 58 °F
Frost then
SunnySunday Night
Low: 35 °F
Clear then
Areas FrostMonday
High: 62 °F
Areas Frost
then SunnyMonday Night
Low: 39 °F
Mostly Clear
Detailed Forecast
Tonight
Showers, mainly after 3am. Low around 57. South wind 5 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers and thunderstorms likely before 3pm, then showers and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 77. South wind 9 to 11 mph, with gusts as high as 24 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 13 mph becoming north after midnight. Winds could gust as high as 28 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 50. North wind 13 to 15 mph, with gusts as high as 28 mph.
Saturday Night
Widespread frost, mainly after 4am. Otherwise, clear, with a low around 33. Light northwest wind.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 58.
Sunday Night
Areas of frost after 4am. Otherwise, mostly clear, with a low around 35.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 40.
Thursday
Sunny, with a high near 63.
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)
2:21 pm EDT Oct 15, 2026
3pm EDT Oct 15, 2026-6pm EDT Oct 22, 2026
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