CHESTER COUNTY, PA — It’s late August, and while summer isn’t done with us yet, this week’s forecast in Chester County has a decidedly autumnal vibe sneaking in. Expect comfortable daytime highs, cool and refreshing nights, and just enough clouds to keep things interesting. Here’s your full day-by-day breakdown:
Sunday: Mild and Partly Sunny
Today brings partly sunny skies with a high near 82°F — a great day to squeeze in one more summer picnic. There’s only a 20% chance of a stray shower after 2 p.m., but most of us will stay dry. A light south breeze around 5 mph keeps things comfortable.
Tonight, clouds increase, and we could see a few showers or a rumble of thunder overnight (30% chance). Expect lows around 65°F with calm winds, perfect for sleeping with the windows cracked — unless the storms pass through.
Monday & Tuesday: Sunny, Breezy, and Refreshing
Monday starts partly sunny but clears out quickly, leaving us with a bright afternoon and a high near 80°F. West winds at 5 to 10 mph will bring in drier, cooler air. Monday night dips to a crisp 57°F under mostly clear skies.
Tuesday keeps the sunshine rolling with a high around 76°F and a gentle west breeze. By night, things cool even further with lows near 54°F — perfect campfire weather.
Wednesday & Thursday: Almost Feels Like Fall
Wednesday will be a stunner: full sunshine, low humidity, and a high near 73°F. Expect a refreshingly cool night at 53°F.
Thursday warms slightly to 76°F under mostly sunny skies. Some passing clouds sneak in overnight, but lows hold steady around 55°F.
Friday & Saturday: Wrapping Up with Sunshine
Friday and Saturday round out the week with beautiful weather — highs near 77°F on Friday and 76°F on Saturday. Skies remain mostly sunny both days, making it an excellent weekend to get outdoors, fire up the grill, or enjoy a late-summer hike.
The Takeaway
This week brings a little bit of everything Chester County loves about late August: mild afternoons, cool evenings, and just enough sun to keep summer alive. With highs settling in the mid-70s to low-80s and low humidity dominating, it’s a perfect blend of comfort and warmth.
☀️ Stay ahead of shifting skies and chilly nights — visit the MyChesCo Weather Center for real-time local forecasts, live radar, and updates you can count on!
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