Weather in Philadelphia, Pennsylvania, United States in May
In an average May, Philadelphia sees a daily high around 70°F and a low around 49°F, based on 1981–2026 of local climate records.
| Average high | 70°F |
|---|---|
| Typical high range | 60°F to 80°F |
| Average low | 49°F |
| Typical low range | 41°F to 58°F |
| Average daily precipitation | 0.10 in |
May records
The most extreme May on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total May accumulation.
High
Highest
95°F
2026-05-19
Lowest
47°F
2020-05-09
Low
Highest
71°F
1991-05-31
Lowest
32°F
2020-05-10
Feels-like
Highest
117°F
2026-05-19
Lowest
22°F
2020-05-09
Humidity
Highest
20.0 g/m³
1991-05-31
Lowest
3.8 g/m³
2020-05-09
Wind
Highest
28 mph
1989-05-06
Lowest
4 mph
2016-05-11
Precip
Wettest
7.72 in
1984
Driest
0.51 in
2023
See Philadelphia's live weather grade →
Visiting Philadelphia in May? See how its comfort stacks up against where you live.
Compare Philadelphia with your city →