Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Fog/Mist
69°F
21°C
| Humidity | 100% |
| Wind Speed | Calm |
| Barometer | 29.87 in (1011.1 mb) |
| Dewpoint | 69°F (21°C) |
| Visibility | 3.00 mi |
| Last update | 17 Aug 1:53 am EDT |
Extended Forecast for
Herndon PA
Overnight
Low: 67 °F
Slight Chance
Showers and
Patchy FogMonday
High: 86 °F
Patchy Fog
then Showers
LikelyMonday Night
Low: 64 °F
Chance
T-storms then
Partly CloudyTuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 85 °F
Sunny
Wednesday Night
Low: 63 °F
Partly Cloudy
Thursday
High: 81 °F
Partly Sunny
then Chance
ShowersThursday Night
Low: 59 °F
Chance
Showers then
Partly Cloudy
Detailed Forecast
Overnight
A slight chance of showers before 3am. Patchy fog. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 20%.
Monday
A slight chance of showers before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 86. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 84. Light north wind.
Tuesday Night
Mostly clear, with a low around 61. Calm wind.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Friday
A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Additional Forecasts and Information
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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 am EDT Aug 17, 2026
2am EDT Aug 17, 2026-6pm EDT Aug 23, 2026
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