Climate normals · 1970–2000
Philadelphia Climate
Philadelphia is a city in United States (PA) with a population of about 1,573,916. Its average annual temperature is 12.9°C (55°F), with roughly 1133 mm of rain per year.
12.9°C
Avg Temp
1133
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Philadelphia Climate
Philadelphia has an average annual temperature of 12.9°C (55°F) and receives about 1133 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
12.9°C
Avg Temp
1133
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 0° / 32° | 89 mm |
| February | 2° / 35° | 71 mm |
| March | 6° / 43° | 100 mm |
| April | 12° / 53° | 96 mm |
| May | 18° / 64° | 106 mm |
| June | 23° / 73° | 91 mm |
| July | 25° / 77° | 114 mm |
| August | 24° / 76° | 111 mm |
| September | 20° / 69° | 99 mm |
| October | 14° / 57° | 78 mm |
| November | 8° / 47° | 89 mm |
| December | 3° / 37° | 89 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Philadelphia
The most comfortable months to visit Philadelphia are typically September, June and May, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 31°C high). The coldest is January (near -4°C low). July is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Philadelphia are typically September, June and May, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Philadelphia, United States has an average annual temperature of 12.9°C and about 1133 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Philadelphia average about 31°C (88°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.