Philadelphia County · Pennsylvania
Philadelphia, PA weather averages
NOAA climate normals for 1991-2020, measured at Phila Intl Ap, 4.2 km from the city centre — month by month temperature, rain and snow.
Quick answer
Philadelphia averages a daily high of 64.7°F and a daily low of 47.2°F across the year, with 41.53 inches of precipitation. July is the warmest month at 87.1°F and January the coldest at 25.6°F.
- Average annual high
- 64.7°FWarmest month July
- Average annual low
- 47.2°FColdest month January
- Precipitation per year
- 41.53 inWettest month July
- Snowfall per year
- 22.4 in79.8 days at or below 32°F
Philadelphia weather month by month
Normal daily high and low, precipitation and snowfall for each month, 1991-2020.
| Month | High °F | Low °F | Precip in | Snow in | Range |
|---|---|---|---|---|---|
| January | 40.3 | 25.6 | 3.03 | 6.5 | 25.6 to 40.3 degrees |
| February | 43.8 | 27.7 | 2.65 | 8.8 | 27.7 to 43.8 degrees |
| March | 52.7 | 34.4 | 3.79 | 2.9 | 34.4 to 52.7 degrees |
| April | 63.9 | 44.1 | 3.56 | 0.5 | 44.1 to 63.9 degrees |
| May | 73.8 | 54 | 3.71 | 0 | 54 to 73.8 degrees |
| June | 82.7 | 63.8 | 3.43 | 0 | 63.8 to 82.7 degrees |
| July | 87.1 | 69.2 | 4.35 | 0 | 69.2 to 87.1 degrees |
| August | 85.3 | 67.9 | 3.5 | 0 | 67.9 to 85.3 degrees |
| September | 78 | 60.3 | 3.78 | 0 | 60.3 to 78 degrees |
| October | 66.6 | 48.4 | 3.18 | 0 | 48.4 to 66.6 degrees |
| November | 56 | 39.2 | 2.99 | 0.3 | 39.2 to 56 degrees |
| December | 44.8 | 30.1 | 3.56 | 3.4 | 30.1 to 44.8 degrees |
Source: NOAA NCEI, U.S. Climate Normals 1991-2020 — station USW00013739, Phila Intl Ap · rates as published for 1991-2020 normals
How to read Philadelphia climate normals
What a climate normal is, and what it is not.
A normal is the average of thirty years of daily observations at one station — here Phila Intl Ap, 4.2 km from the centre of Philadelphia. It describes a typical year, so any single year will run warmer, cooler, wetter or drier. Readings taken at an airport on the edge of town usually sit a degree or two below a dense downtown on summer nights. Philadelphia sees about 24 days a year at or above 90°F and about 71.5 days with a tenth of an inch of precipitation or more.
Keep going
Other Philadelphia data on this site.