Generally, average daily wearther in San Luis Obispo for the month of September is 17. High average temperature is 26 and low average expected to be 12 degrees. For more context we have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 17 |
| High Temperature | 26 |
| Low Temperature | 12 |
Useful Links: San Luis Obispo Weather: Average Weather & Yearly Climate