Pack or skip
Rain jacket for Washington DC in September
Verdict
Pack it
Around 8 rainy days — a shell keeps you moving between subway stops.
Why
Washington DC in September averages highs of 81°F, lows of 64°F, 8 rainy days.
That climate means a rain jacket earns its space in the bag. Around 8 rainy days — a shell keeps you moving between subway stops.