Average annual temperature is 15.0 °C
Absolute maximum temperature: 39.1 °C
Absolute minimum temperature: -0.2 °C
Number of sunny days: 281 days
Number of rainy days: 84 days
Look at detailed online map of San Luis Obispo County
* Weather data for San Luis Obispo County United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.3 | 21.4 | 19.6 | 27.8 | 32.7 | 34.3 | 39.1 | 38.4 | 34.8 | 33.4 | 28.4 | 24.0 |
| Average daytime temperature (°C) | 13.7 | 14.1 | 13.4 | 20.9 | 21.2 | 22.6 | 32.6 | 30.9 | 25.8 | 26.4 | 20.6 | 17.1 |
| Average temperature (°C) | 8.5 | 8.1 | 8.5 | 13.8 | 14.4 | 15.8 | 24.7 | 23.0 | 18.7 | 18.6 | 13.9 | 11.5 |
| Average night temperature (°C) | 5.0 | 3.6 | 5.0 | 8.2 | 9.7 | 11.0 | 17.9 | 17.2 | 13.9 | 13.1 | 9.0 | 7.7 |
| Absolute minimum temperature (°C) | 0.5 | -0.2 | 0.6 | 1.4 | 5.2 | 8.5 | 11.0 | 13.0 | 9.9 | 7.7 | 3.3 | 4.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.9 | 8.8 | 7.9 | 12.0 | 11.7 | 12.0 | 13.3 | 12.2 | 10.8 | 10.3 | 8.7 | 6.8 |
| Precipitation (mm) | 368 | 127 | 265 | 0 | 14 | 21 | 0 | 1 | 8 | 0 | 19 | 81 |
| Sunny days | 13 | 17 | 13 | 30 | 24 | 25 | 31 | 27 | 25 | 30 | 23 | 23 |
| Rainy days | 18 | 11 | 18 | 0 | 7 | 5 | 0 | 4 | 5 | 1 | 7 | 8 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit San Luis Obispo County during the most sunny months:
The largest precipitation sum in San Luis Obispo County is at