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San Diego's Weather Forecast for Sunday, September 22, 2024: Warm start to Fall

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Happy first day of Fall!

The Autumn Equinox took place early Sunday morning, and with it comes earlier nights and shorter days.

However, it's not bringing the cooler temperatures just yet.

Monday will bring highs near 80 along the coast, while plenty of inland neighborhoods will reach into the low 90s.

That places most areas 3-5 degrees above seasonal averages.

Mountains are tracking highs in the mid 80s Monday and Tuesday. Overnight lows will be in the upper 50s and low 60s so those high temps shouldn’t last too far into the evening.

And our deserts are kicking off the Fall season with triple digits.

Highs will hover around 102 degrees this week, with overnight lows in the mid 70s.

Temps should cool more as we head into next weekend, so the real Fall numbers are not too far away!

Sunday's Highs:
Coast: 73-83°
Inland: 84-92°
Mountains: 80-94°
Deserts: 99-105°

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