Will I be cold?
Will I be cold in Philadelphia in July?
Verdict
No — No, comfortable.
Lows stay near 68°F — you won't be reaching for the puffer.
Day vs. night
Day
87°F
Hot
Prioritize shade, hydration, and a brim.
Night
68°F
Comfortable
Comfortable outside without an extra layer.
Why
Philadelphia in July averages highs of 87°F, lows of 68°F, 9 rainy days.
You can pack for the daytime temps and not worry about the evening dip.