Pack or skip
Insect repellent for Washington DC in July
Verdict
Pack it
Warm (90°F) plus 10 rainy days = mosquito conditions.
Why
Washington DC in July averages highs of 90°F, lows of 72°F, 10 rainy days.
That climate means insect repellent earns its space in the bag. Warm (90°F) plus 10 rainy days = mosquito conditions.