Pack or skip
Umbrella for Washington DC in September
Verdict
Pack it
Around 8 rainy days across the month — an umbrella earns its space.
Why
Washington DC in September averages highs of 81°F, lows of 64°F, 8 rainy days.
That climate means an umbrella earns its space in the bag. Around 8 rainy days across the month — an umbrella earns its space.