Pack or skip
Sunscreen for Washington DC in June
Verdict
Pack it
Sun still finds you at 86°F — UV doesn't care about temperature.
Why
Washington DC in June averages highs of 86°F, lows of 67°F, 10 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 86°F — UV doesn't care about temperature.