Pack or skip
Flip-flops for Washington DC in September
Verdict
Pack it
Highs around 81°F — perfect flip-flop weather.
Why
Washington DC in September averages highs of 81°F, lows of 64°F, 8 rainy days.
That climate means flip-flops earns its space in the bag. Highs around 81°F — perfect flip-flop weather.