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Pack or skip

Thermal underwear for Jacksonville in September

Verdict

Skip it

Lows near 70°F — you'll overheat.

Why

Jacksonville in September averages highs of 87°F, lows of 70°F, 12 rainy days.

That climate means thermal underwear isn't pulling its weight. Lows near 70°F — you'll overheat.

Other decisions for Jacksonville

Nearby months

See the full packing list for Jacksonville in September

Or outfit ideas for Jacksonville in September