Pack or skip
Umbrella for Chicago in September
Verdict
Pack it
Around 9 rainy days across the month — an umbrella earns its space.
Why
Chicago in September averages highs of 74°F, lows of 57°F, 9 rainy days.
That climate means an umbrella earns its space in the bag. Around 9 rainy days across the month — an umbrella earns its space.