Early autumn · Weather & things to do
Kennett Square in September
Kennett Square cools off: highs slip to 79°F (26°C), from 85°F in August, with lows of 58°F (14°C) and about 4.4 in (112 mm) of rain.
September opens the best stretch on our comfort score, at 83/100 (3rd of 12).
- Avg high
- 79°F (26°C)
- Avg low
- 58°F (14°C)
- Rain
- 4.4 in (112 mm)
- Humidity
- 73%
- Cloud cover
- 50%
- Daylight
- ~12 h 15 min
- Comfort score
- 83/100 · Great
What September feels like
Highs settle around 79°F (26°C), warm enough for short sleeves most of the day.
Lows average 58°F (14°C).
Some rain is likely, about 4.4 in (112 mm) in the month, so pack for a shower or two.
Plan around September
September is one of Kennett Square's best months on the climate data.
- Last warm month for a while: October highs fall to 65°F.
- Opens the best-scoring stretch on our comfort score: April & May and September & October.
- Comfort improves from 72/100 in August to 83/100.
- Our Philadelphia, Longwood & Lancaster route is planned for Late Nov – Dec, a window set by the holiday season rather than the weather — September falls outside it.
What to pack for September
- Light, breathable clothes79°F afternoons
- Packable rain jacket or umbrellaabout 4.4 in of rain
- Comfortable walking shoesmost picks involve some walking
What to do in Kennett Square in September
With conditions on your side, the picks below favor time outside.
Chaddsford Winery
Tasting room in a restored barn on US 1, one of the oldest and best-known wineries in Pennsylvania.
Talula's Table
Market and cafe on State Street by day; at night a single farm table seats one party for a long tasting dinner.
Why now September scores 83/100 for comfort, good conditions for being outside.
Longwood Gardens
Former du Pont estate garden; for A Longwood Christmas it lights its outdoor trees and fills the conservatory with decorated firs.
Why now Highs near 79°F and 4.4 in of monthly rain make this an easy outdoor pick.
Brandywine Museum of Art
Converted mill on Brandywine Creek with three generations of Wyeth paintings and a large model railroad at Christmas.
Nearby in September
- Philadelphia in September~30 mi · highs 79°F, 4.0 in rain · similar daytime temperatures, about as wet
- Lancaster in September~34 mi · highs 79°F, 4.6 in rain · similar daytime temperatures, about as wet
- Baltimore in September~61 mi · highs 80°F, 4.4 in rain · similar daytime temperatures, about as wet
- Washington, DC in September~96 mi · highs 80°F, 4.2 in rain · similar daytime temperatures, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Kennett Square in September: quick answers
Is September a good time to visit Kennett Square?
Yes. On the climate data it's one of the best months, scoring 83/100. Expect highs of 79°F (26°C) and 4.4 in (112 mm) of rain.
How hot is Kennett Square in September?
Average highs are 79°F (26°C) and average lows 58°F (14°C), making it the 4th-warmest month by daytime highs.
Does it rain a lot in Kennett Square in September?
Some: about 4.4 in (112 mm) of rain falls across September on average, the 4th-wettest month of the year. The annual total is about 48.3 in (1226 mm).
What should I pack for Kennett Square in September?
Bring light, breathable clothes (79°F afternoons), packable rain jacket or umbrella (about 4.4 in of rain) and comfortable walking shoes (most picks involve some walking).
More on Kennett Square
Planning Kennett Square in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.