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Hazardous Weather Conditions
Current conditions at
Selinsgrove Penn Valley Airport (KSEG)
Lat: 40.82°NLon: 76.87°WElev: 443ft.
Fair
86°F
30°C
| Humidity | 75% |
| Wind Speed | S 3 mph |
| Barometer | 30.02 in (1016.2 mb) |
| Dewpoint | 77°F (25°C) |
| Visibility | 10.00 mi |
| Heat Index | 97°F (36°C) |
| Last update | 30 Jul 11:53 am EDT |
Extended Forecast for
Herndon PA
Heat Advisory July 30, 12:23pm until July 30, 08:00pm
NOW until 8:00pm Wed
Heat Advisory
This Afternoon
High: 95 °F
Isolated
T-stormsTonight
Low: 71 °F
Slight Chance
T-stormsThursday
High: 83 °F
Chance
T-storms then
Heavy RainThursday Night
Low: 64 °F
Heavy Rain
Friday
High: 74 °F
Chance
T-stormsFriday Night
Low: 57 °F
Partly Cloudy
Saturday
High: 79 °F
Sunny
Saturday Night
Low: 56 °F
Mostly Clear
Detailed Forecast
This Afternoon
Isolated showers and thunderstorms after 2pm. Partly sunny and hot, with a high near 95. Heat index values as high as 104. Light southwest wind. Chance of precipitation is 20%.
Tonight
A slight chance of showers and thunderstorms, mainly between midnight and 1am. Partly cloudy, with a low around 71. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. High near 83. Calm wind becoming northeast around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Some of the storms could produce heavy rainfall. Low around 64. Northeast wind 3 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of showers, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 74. Northeast wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 84.
Additional Forecasts and Information
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Point Forecast:
Herndon PA
40.72°N 76.85°W (Elev. 397 ft)
40.72°N 76.85°W (Elev. 397 ft)
7:19 am EDT Jul 30, 2025
12pm EDT Jul 30, 2025-6pm EDT Aug 5, 2025
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