Pack or skip
Sunglasses for Michigan City in September
Verdict
Pack it
Highs around 73°F — plenty of daylight glare.
Why
Michigan City in September averages highs of 73°F, lows of 55°F, 8 rainy days.
That climate means sunglasses earns its space in the bag. Highs around 73°F — plenty of daylight glare.