Pack or skip
Insect repellent for Pittsburgh in May
Verdict
Pack it
Warm (70°F) plus 15 rainy days = mosquito conditions.
Why
Pittsburgh in May averages highs of 70°F, lows of 49°F, 15 rainy days.
That climate means insect repellent earns its space in the bag. Warm (70°F) plus 15 rainy days = mosquito conditions.