Typical Weather in San Luis Obispo, CA in September
81° F Avg High
54° F Avg Low
0 Rainy Days
☀️ Temperature Summary
September is one of the warmer months of the year for San Luis Obispo, with highs averaging around 81°F. You can expect overnight lows near 54°F most days. This is the hottest month of the year in San Luis Obispo.
The warm, dry temperatures in September make San Luis Obispo a great destination to relax and soak up the sun.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 1% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 0 inches.
Rainfall Throughout the Year
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