Best months
May, September, and October
Warmest month
July, 32°C
Wettest month
June, 136 mm
Philadelphia weather by month
Average daily high and low, total rainfall and days with at least 2.5 mm of rain.
| Month | High / low | Rain | Verdict |
|---|---|---|---|
| January | 6°C / -2°C | 83 mm · 6 days | Cold |
| February | 7°C / -1°C | 72 mm · 6 days | Cold |
| March | 12°C / 3°C | 99 mm · 6 days | Fair |
| April | 19°C / 9°C | 107 mm · 7 days | Fair |
| May | 24°C / 14°C | 122 mm · 8 days | Great |
| June | 29°C / 19°C | 136 mm · 8 days | Fair |
| July | 32°C / 23°C | 124 mm · 7 days | Hot |
| August | 30°C / 21°C | 112 mm · 6 days | Fair |
| September | 27°C / 18°C | 120 mm · 6 days | Great |
| October | 20°C / 11°C | 89 mm · 5 days | Great |
| November | 14°C / 5°C | 81 mm · 6 days | Fair |
| December | 8°C / 1°C | 116 mm · 7 days | Cold |
Philadelphia by season
Spring
Spring is glorious in Philly, with mild temperatures, blooming flowers in Fairmount Park, and outdoor festivals kicking off. The city shakes off winter and comes alive.
- + Pleasant weather for walking
- + Beautiful cherry blossoms at the Japanese House
- + Major events like the Philadelphia Flower Show
- − Can be rainy
- − Popular time for school trips to historic sites
Summer
Hot and humid, but vibrant with endless outdoor events, parks in full swing, and waterfront activities. Long days are perfect for evening exploration.
- + Free outdoor concerts and movies
- + Spruce Street Harbor Park opens
- + Great for baseball games at Citizens Bank Park
- − High heat and humidity
- − Crowded tourist attractions
Autumn
Arguably the best time to visit. Crisp air, stunning fall foliage in Fairmount Park, and a packed calendar of food and cultural festivals.
- + Ideal walking weather
- + Stunning fall colors
- + Events like Thanksgiving Day Parade and Halloween festivities
- − Can be unpredictable, with quick temperature shifts
- − A very popular convention season
Winter
Cold and often gray, but with a charming, quieter atmosphere. Holiday decorations, Christmas markets, and indoor museums provide cozy appeal.
- + Fewer tourists at major sites
- + Beautiful holiday lights and Christmas Village at LOVE Park
- + Great for museum-hopping
- − Bone-chilling wind off the rivers
- − Potential for snow/ice disrupting plans
Philadelphia month by month
Philadelphia in January
ColdIn January, Philadelphia averages highs of 6°C and lows of -2°C, with about 6 rainy days and 83 mm of rain. It is cold, so pack warm layers.
Philadelphia in February
ColdIn February, Philadelphia averages highs of 7°C and lows of -1°C, with about 6 rainy days and 72 mm of rain. It is cold, so pack warm layers.
Philadelphia in March
FairIn March, Philadelphia averages highs of 12°C and lows of 3°C, with about 6 rainy days and 99 mm of rain. Expect mixed weather, with comfortable spells.
Philadelphia in April
FairIn April, Philadelphia averages highs of 19°C and lows of 9°C, with about 7 rainy days and 107 mm of rain. Expect mixed weather, with comfortable spells.
Philadelphia in May
GreatIn May, Philadelphia averages highs of 24°C and lows of 14°C, with about 8 rainy days and 122 mm of rain. It is one of the most comfortable months for sightseeing.
Philadelphia in June
FairIn June, Philadelphia averages highs of 29°C and lows of 19°C, with about 8 rainy days and 136 mm of rain. Expect mixed weather, with comfortable spells.
Philadelphia in July
HotIn July, Philadelphia averages highs of 32°C and lows of 23°C, with about 7 rainy days and 124 mm of rain. It is hot, so plan sightseeing for mornings and evenings.
Philadelphia in August
FairIn August, Philadelphia averages highs of 30°C and lows of 21°C, with about 6 rainy days and 112 mm of rain. Expect mixed weather, with comfortable spells.
Philadelphia in September
GreatIn September, Philadelphia averages highs of 27°C and lows of 18°C, with about 6 rainy days and 120 mm of rain. It is one of the most comfortable months for sightseeing.
Philadelphia in October
GreatIn October, Philadelphia averages highs of 20°C and lows of 11°C, with about 5 rainy days and 89 mm of rain. It is one of the most comfortable months for sightseeing.
Philadelphia in November
FairIn November, Philadelphia averages highs of 14°C and lows of 5°C, with about 6 rainy days and 81 mm of rain. Expect mixed weather, with comfortable spells.
Philadelphia in December
ColdIn December, Philadelphia averages highs of 8°C and lows of 1°C, with about 7 rainy days and 116 mm of rain. It is cold, so pack warm layers.
Top tours and experiences in Philadelphia
The tours and tickets travellers book most, with ratings and reviews from Viator.
Revolution and the Founders: History Tour of Philadelphia
4.93,913 reviews2h
from €26
Check availability
Philadelphia Old City Historic Walking Tour with 10+ Top Sites
4.92,436 reviews1h 30m
from €39
Check availability
Center City Philadelphia Food Tour with Reading Market
4.91,075 reviews2h 30m
from €53
Check availabilityAll things to do in Philadelphia →
Tours and prices from Viator, a Tripadvisor company. Prices change with your dates. We may earn a commission if you book, at no extra cost to you.
Plan your Philadelphia trip
Best time to visit Philadelphia: FAQ
What is the best month to visit Philadelphia?+
October is the most comfortable month on average, with highs of 20°C. May and September are close behind.
What is the rainiest month in Philadelphia?+
June is the wettest month, with about 136 mm of rain.
How hot does Philadelphia get?+
July is the warmest month, with average highs of 32°C and lows of 23°C. The coldest nights come in January, averaging -2°C.
Averages for 2006–2025 from the PHILA FRANKLIN INST weather station (1 km from the centre), NOAA Global Historical Climatology Network. Verdicts rate sightseeing comfort from daytime highs and rainy days.