CWS Forecast: Southeast Pennsylvania

As we head into the second half of the week, a high-pressure system positioned south of Pennsylvania will keep precipitation out of the area for a short period. Skies will be cloudy throughout the day on Thursday, with highs in the 30s. Overnight, the high-pressure system will begin to move out to sea as our temperatures will remain in the 30s. For our Friday, skies will remain overcast with highs in the mid to upper 40s. Overnight lows will be in the upper 30s in our northern counties and low 40s in our southern counties. A low-pressure system will move into the area Saturday morning, bringing rain for the entire commonwealth at some point throughout the day. Temperatures will be above normal, with highs reaching the low to mid 60s before the cold front moves through Saturday evening. Clouds will start to clear up overnight behind the front, with lows in the mid to upper 30s. Clouds should be out of the state by mid-morning Sunday, as a high-pressure system moves over our area for the rest of the forecast period. Highs in the low to mid 40s and lows in the low to mid 40s. Do expect some cloud cover overnight Sunday and into Monday. Mostly sunny skies will remain across the state Monday and into Monday night, as high temperatures will be in the mid to upper 40s and lows in the mid to upper 30s.  

Day One: Wednesday, December 8th 2021

Clouds increasing during the day with calm winds. Cloud cover will dissipate overnight, blustery.

High: 41°F

Low: 32°F

Day Two: Thursday, December 9th 2021

Mostly cloudy with a slight chance of rain showers during the day. Cloudy skies remain overnight.

High: 51°F

Low: 46°F

Day Three: Friday, December 10th 2021

Rainy with occasional rumbles of thunder during the day and night. Windy conditions expected around the area. Unseasonably warm temperatures expected.

High: 69°F 

Low: 46°

Day Four: Saturday, December 11th 2021

Clearing skies leading to sun during the day leading to the night. Much cooler temperatures expected

High: 48°

Low: 34°F

Day Five: Sunday, December 12th 2021

Mainly sunny skies with fair temperatures. Clear skies overnight.

High: 52°F

Low: 33°F


Last Updated on December 8, 2021 at 4:37 pm