Pack or skip
Insect repellent for Philadelphia in July
Verdict
Pack it
Warm (87°F) plus 9 rainy days = mosquito conditions.
Why
Philadelphia in July averages highs of 87°F, lows of 68°F, 9 rainy days.
That climate means insect repellent earns its space in the bag. Warm (87°F) plus 9 rainy days = mosquito conditions.