Summer Heat In Multiple Spots

A large dome of high pressure is expected to deliver summer heat with humidity in multiple sections of the country to start off the week. Excessive heat warnings and heat advisories are in effect across the south-central Plains, Mid to Lower Mississippi Valley and from the Mid-Atlantic into the Northeast. This includes the cities of New York, Philadelphia, Dallas, Oklahoma City and Kansas City. Read More >

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82° N Lon: 76.87° W Elev: 443 ft.

Fair

68°F

20°C

Humidity	96%
Wind Speed	Calm
Barometer	29.97 in (1014.5 mb)
Dewpoint	67°F (19°C)
Visibility	10.00 mi
Last update	18 Aug 11:53 pm EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Mobile Weather Hourly Weather Forecast

Detailed forecast for

Northumberland County

Overnight

Partly cloudy. A slight chance of showers late this evening. Lows in the upper 60s. South winds around 5 mph. Chance of rain 20 percent.

Monday

Partly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 50 percent.

Monday Night

Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Warm with lows around 70. West winds around 5 mph. Chance of rain 50 percent.

Tuesday

Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Hot with highs around 90. Northwest winds around 5 mph, becoming southwest in the afternoon. Chance of rain 50 percent.

Tuesday Night

Mostly cloudy with a chance of showers. A chance of thunderstorms, mainly in the evening. Humid with lows in the upper 60s. South winds around 5 mph. Chance of rain 50 percent.

Wednesday

Partly sunny. A chance of showers in the morning, then showers and thunderstorms likely in the afternoon. Very warm. Humid with highs in the upper 80s. Chance of rain 60 percent.

Wednesday Night

Mostly cloudy. Showers and thunderstorms likely, mainly in the evening. Humid with lows in the upper 60s. Chance of rain 60 percent.

Thursday

Partly sunny with a chance of showers. Humid with highs in the mid 80s. Chance of rain 30 percent.

Thursday Night

Partly cloudy. A chance of showers in the evening. Lows around 60. Chance of rain 30 percent.

Friday

Sunny. Highs in the upper 70s.

Friday Night

Mostly clear. Lows in the mid 50s.

Saturday

Mostly sunny. Highs in the lower 80s.