Pack or skip
Insect repellent for Washington DC in August
Verdict
Pack it
Warm (88°F) plus 9 rainy days = mosquito conditions.
Why
Washington DC in August averages highs of 88°F, lows of 71°F, 9 rainy days.
That climate means insect repellent earns its space in the bag. Warm (88°F) plus 9 rainy days = mosquito conditions.