Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.N/A
| Humidity | NA |
| Wind Speed | NA |
| Barometer | NA |
| Dewpoint | N/A |
| Visibility | NA |
| Last update | *** Not a current observation *** |
Extended Forecast for
Herndon PA
Tonight
Low: 64 °F
Mostly Clear
Monday
High: 89 °F
Mostly Sunny
then Showers
LikelyMonday Night
Low: 67 °F
Slight Chance
T-stormsTuesday
High: 85 °F
Chance
ShowersTuesday Night
Low: 62 °F
Chance
ShowersWednesday
High: 84 °F
Partly Sunny
then Chance
ShowersWednesday Night
Low: 64 °F
Chance
ShowersThursday
High: 84 °F
Mostly Sunny
Thursday Night
Low: 59 °F
Partly Cloudy
Detailed Forecast
Tonight
Mostly clear, with a low around 64. Calm wind.
Monday
A chance of showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Increasing clouds, with a high near 89. Calm wind becoming southwest 5 to 8 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers and thunderstorms, mainly between 11pm and 2am. Mostly cloudy, with a low around 67. Light west wind. Chance of precipitation is 20%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Calm wind becoming northwest around 5 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.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Herndon PA
40.72°N 76.85°W (Elev. 397 ft)
40.72°N 76.85°W (Elev. 397 ft)
2:21 pm EDT Aug 9, 2026
4pm EDT Aug 9, 2026-6pm EDT Aug 16, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
