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Severe Weather of July 18th, 2026

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

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

Mostly Cloudy

65°F

18°C

Humidity	84%
Wind Speed	Calm
Barometer	29.96 in (1014.1 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	26 Jul 3:53 am EDT

More Information:

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

Detailed forecast for

Union County

Rest Of Tonight

Partly cloudy. Lows in the lower 60s. Light and variable winds.

Sunday

Partly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Light and variable winds, becoming south around 5 mph in the afternoon. Chance of rain 50 percent.

Sunday Night

Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 40 percent.

Monday

Mostly sunny. Very warm. Humid with highs in the mid 80s. Light and variable winds, becoming southwest around 5 mph in the afternoon.

Monday Night

Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers after midnight. Humid with lows in the mid 60s. South winds around 5 mph in the evening, becoming light and variable. Chance of rain 80 percent.

Tuesday

Showers. A chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Chance of rain 90 percent.

Tuesday Night

Showers with a chance of thunderstorms in the evening, then a chance of showers after midnight. Humid with lows in the lower 60s. Chance of rain 90 percent.

Wednesday

Partly sunny with a chance of showers in the morning, then mostly cloudy with showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Chance of rain 70 percent.

Wednesday Night

Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 70 percent.

Thursday

Mostly sunny. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of precipitation 30 percent.

Thursday Night

Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 30 percent.

Friday

Sunny. Highs in the lower 80s.

Friday Night

Partly cloudy. Lows in the lower 60s.

Saturday

Mostly sunny. A chance of showers in the afternoon. Humid with highs in the lower 80s. Chance of rain 40 percent.