Best time to visit Philadelphia
The best months to visit Philadelphia are May, September and October, based on month-by-month temperature and rainfall data. The full year of weather, daylight, holidays, and festival timing is below.
May, September and October score best for Philadelphia weather:
- May24° / 12°CMay is warm and strong for Italian Market walks, Schuylkill trails, and outdoor tables on Passyunk Avenue.
- September26° / 15°CSeptember is a comfortable shoulder month for Fairmount, Fishtown, and University City after student move-in.
- October20° / 9°COctober brings crisp weather, Halloween crowds at Eastern State Penitentiary, and strong park-and-market days.
Get a Philadelphia plan you can trust — matched to the month you pick, with every place checked for hours, closures, and booking needs.
- Free. No account.
- Ready in about 30 seconds.
30% off a Going membership after you build your plan.
By TripSapien Research · Updated May 20, 2026
Philadelphia weather by month
| Month | High | Low | Rain (mm) | Rainy days | Daylight |
|---|---|---|---|---|---|
| January | 6° | -3° | 80 | 11 | 10h |
| February | 8° | -3° | 70 | 10 | 11h |
| March | 12° | 1° | 100 | 11 | 12h |
| April | 19° | 6° | 90 | 11 | 13h |
| MayBest weather | 24° | 12° | 85 | 11 | 14h |
| June | 29° | 17° | 105 | 10 | 15h |
| July | 31° | 20° | 110 | 10 | 15h |
| August | 30° | 19° | 110 | 9 | 14h |
| SeptemberBest weather | 26° | 15° | 110 | 9 | 12h |
| OctoberBest weather | 20° | 9° | 90 | 9 | 11h |
| November | 14° | 3° | 75 | 9 | 10h |
| December | 9° | -1° | 100 | 11 | 9h |
Temperatures in °C. Long-term monthly averages.
Know your Philadelphia month?
Pick your dates and we'll build the trip around them — every place checked for closures and booking needs.
Philadelphia month by month
January
Philadelphia in January: 5.8°C high, -3.3°C low, 80mm rain over 11 days, 9.5h daylight. Cold and clearer — short daylight but skies open.
February
Philadelphia in February: 7.6°C high, -2.7°C low, 70mm rain over 10 days, 10.5h daylight. Mild and dry — shoulder-season sweet spot.
March
Philadelphia in March: 12.1°C high, 0.9°C low, 100mm rain over 11 days, 11.7h daylight. Mild but rainy — flexible plans pay off.
April
Philadelphia in April: 18.7°C high, 6.3°C low, 90mm rain over 11 days, 13.1h daylight. Mild and dry — shoulder-season sweet spot.
MayBest weather
Philadelphia in May: 24.1°C high, 11.8°C low, 85mm rain over 11 days, 14.2h daylight. Mild and dry — shoulder-season sweet spot.
June
Philadelphia in June: 28.6°C high, 17°C low, 105mm rain over 10 days, 14.8h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
Odunde
July
Philadelphia in July: 31.2°C high, 20°C low, 110mm rain over 10 days, 14.6h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
August
Philadelphia in August: 30.1°C high, 19.1°C low, 110mm rain over 9 days, 13.6h daylight. Hot and rainy — afternoon storms, plan indoor afternoons.
SeptemberBest weather
Philadelphia in September: 26.4°C high, 15.2°C low, 110mm rain over 9 days, 12.2h daylight. Mild but rainy — flexible plans pay off.
Made In America Festival
OctoberBest weather
Philadelphia in October: 20.1°C high, 8.7°C low, 90mm rain over 9 days, 10.9h daylight. Mild and dry — shoulder-season sweet spot.
AIDS Walk Philly
November
Philadelphia in November: 13.9°C high, 3.3°C low, 75mm rain over 9 days, 9.7h daylight. Mild and dry — shoulder-season sweet spot.
December
Philadelphia in December: 8.5°C high, -0.6°C low, 100mm rain over 11 days, 9.2h daylight. Mild but rainy — flexible plans pay off.
Ready to plan Philadelphia?
Pick one of the best months and turn it into a full Philadelphia plan — every place checked for closures, limited hours, and booking needs on your dates.