Typical Weather in San Luis Obispo, CA in December
65° F Avg High
43° F Avg Low
5 Rainy Days
☀️ Temperature Summary
December is one of the cooler months of the year for San Luis Obispo, with highs averaging around 65°F. You can expect overnight lows near 43°F most days. Daily high temperatures can range between 68°F and 64°F, and typically fall throughout the month. This is the coldest month of the year in San Luis Obispo.
Despite it being the coolest month of the year, December is still a great time to visit San Luis Obispo, with mild temperatures and sunny days being very common.
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 December you can expect close to a 16% chance of rain for any given day. It rains more than usual in December, with total rainfall for the month typically near 4 inches.
Rainfall Throughout the Year
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