Pack or skip
Insect repellent for Philadelphia in August
Verdict
Pack it
Warm (85°F) plus 9 rainy days = mosquito conditions.
Why
Philadelphia in August averages highs of 85°F, lows of 66°F, 9 rainy days.
That climate means insect repellent earns its space in the bag. Warm (85°F) plus 9 rainy days = mosquito conditions.