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When is the best time to visit Philadelphia?
In general the best time to visit Philadelphia is probably July, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
But ultimately the best time to visit depends on what you want to do:
- The best time for a sunbathing holiday is June, July, August. Average maximum temperatures are up to +30°C in July and it has 4 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during April - October.
- If you want to avoid wet weather, then your choice is August, September, October with the lowest chance of rain.
Average weather in Philadelphia in different months
This is the average weather in Philadelphia for each month based on historic data:
April, May, June, July, August, September, October usually has good weather. Average maximum temperature reaches +30°C during July.
In January, February, March, November, December the weather is average. Expect around 44 rainy days, and the precipitation amounts to approximately 84 mm in March.
Climate in Philadelphia
Here is the detailed breakdown of the climate in Philadelphia for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +23°C | +25°C | +31°C | +35°C | +36°C | +38°C | +40°C | +38°C | +36°C | +34°C | +26°C | +23°C |
| Average Maximum Temperature | |||||||||||
| +5°C | +7°C | +12°C | +18°C | +23°C | +28°C | +30°C | +29°C | +26°C | +19°C | +13°C | +8°C |
| Minimum Temperature | |||||||||||
| -24°C | -22°C | -16°C | -6°C | +1°C | +8°C | +11°C | +9°C | +4°C | -2°C | -8°C | -17°C |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 67 | 64 | 62 | 62 | 66 | 67 | 69 | 71 | 72 | 71 | 68 | 69 |
| Rain, mm | |||||||||||
| 57 | 49 | 84 | 97 | 99 | 99 | 102 | 96 | 101 | 91 | 76 | 81 |
| Snow, mm | |||||||||||
| 23 | 25 | 13 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 11 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 |
| Sunny Days | |||||||||||
| 4 | 4 | 5 | 5 | 4 | 4 | 4 | 5 | 7 | 8 | 6 | 4 |
| Cloud Days | |||||||||||
| 14 | 11 | 12 | 10 | 11 | 11 | 11 | 10 | 11 | 12 | 14 | 14 |
| Rainy Days | |||||||||||
| 7 | 7 | 11 | 15 | 15 | 15 | 16 | 15 | 12 | 12 | 10 | 9 |
| Snowy Days | |||||||||||
| 6 | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
Average Temperature
Here are the average maximum and minimum temperatures in Philadelphia during the whole year:
The hottest month in Philadelphia is July with average maximum temperature going up to +30°C. The coldest month is January with the lowest temperatures of -2°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Philadelphia looks throughout the year, in %:
The most humid month in Philadelphia is September with average humidity going up to 72%. The least humid month is March with an average humidity of 62%.
Rain
Amount of rainfall in mm. in Philadelphia during the whole year based on historical data:
The sunniest and driest month is October with approximately 8 sunny days and a total precipitation of around 91 mm. The rainiest and wettest month is July with approximately 16 rainy days and 102 mm of total precipitation.
Snow
Amount of snow in mm. in Philadelphia during the whole year based on historical data:
The snowiest month is February with approximately 6 snowy days.
FAQ
Frequently asked questions about the weather in Philadelphia:
What is the hottest month in Philadelphia?
The hottest month in Philadelphia is July with average maximum temperature of +30°C.
What is the coldest month in Philadelphia?
The coldest month in Philadelphia is January with minimum temperatures of -2°C.
Is Philadelphia worth visiting in winter?
Winter in Philadelphia could be a good time to visit, as the weather is generally ok.
When does it rain the least in Philadelphia?
if you're looking to visit Philadelphia when it rains the least, you should plan your trip for July, September, June. During this time, rainfall is rare with the driest month being February with only 49 mm of rain.
Other cities in USA
Check out the weather for other cities in USA.
Monthly weather in Philadelphia
Source of the data
For this page, we’ve looked at the typical weather in Philadelphia, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.