Pack or skip
Sunscreen for Washington DC in March
Verdict
Pack it
Sun still finds you at 58°F — UV doesn't care about temperature.
Why
Washington DC in March averages highs of 58°F, lows of 38°F, 7 rainy days.
That climate means sunscreen earns its space in the bag. Sun still finds you at 58°F — UV doesn't care about temperature.