Hazardous Weather Conditions
Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Overcast
89°F
32°C
| Humidity | 65% |
| Wind Speed | N 3 mph |
| Barometer | 29.91 in (1012.4 mb) |
| Dewpoint | 76°F (24°C) |
| Visibility | 10.00 mi |
| Heat Index | 100°F (38°C) |
| Last update | 1 Sep 4:53 pm EDT |
Extended Forecast for
Northumberland PA
Severe T-storm Watch until September 2, 12:00am
NOW until 12:00am Wed
Severe T-storm Watch
This Afternoon
High: 87 °F
Severe
ThunderstormsTonight
Low: 69 °F
Severe
Thunderstorms
and Patchy
FogWednesday
High: 81 °F
Severe
Thunderstorms
and Patchy
FogWednesday Night
Low: 69 °F
Severe
ThunderstormsThursday
High: 86 °F
Chance
Showers then
Chance
T-stormsThursday Night
Low: 68 °F
Chance
T-storms then
Chance
ShowersFriday
High: 84 °F
Mostly Sunny
then Chance
ShowersFriday Night
Low: 60 °F
Chance
Showers then
Partly Cloudy
Detailed Forecast
This Afternoon
A slight chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a high near 87. West wind around 6 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 1am. Some of the storms could be severe. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, mainly after 7am. Some of the storms could be severe. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 81. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10pm. Some of the storms could be severe. Mostly cloudy, with a low around 69. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 86. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 57.
Labor Day
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 77.
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)
4:51 pm EDT Sep 1, 2026
5pm EDT Sep 1, 2026-6pm EDT Sep 8, 2026
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