Yes
you do need a jacket based on the weather in San Luis Obispo, CA, USA 1 second ago
Why? Because it's not very warm out!
54°F12°C & Mostly Cloudy
Wind is 4 mph6 km/h from the North, gusting to 9 mph14 km/h
| October 31 | ||||
| 1pm | 54°F12°C | 5 mph7 km/h North | Mostly Cloudy | |
| 2pm | 54°F12°C | 6 mph9 km/h North | Partly Cloudy | |
| 3pm | 53°F12°C | 4 mph7 km/h Northeast | Partly Cloudy | |
| 4pm | 57°F14°C | 2 mph4 km/h East | Partly Cloudy | |
| 5pm | 60°F16°C | 2 mph3 km/h North | Partly Cloudy | |
| 6pm | 65°F18°C | 1 mph2 km/h Northwest | Mostly Clear | |
| 7pm | 69°F20°C | 1 mph2 km/h Northwest | Clear | |
| 8pm | 72°F22°C | 3 mph5 km/h West | Clear | |
| 9pm | 73°F23°C | 4 mph6 km/h West | Clear | |
| 10pm | 72°F22°C | 5 mph8 km/h Northwest | Clear | |
| 11pm | 71°F22°C | 5 mph8 km/h Northwest | Clear | |
| November 1 | ||||
| 12am | 68°F20°C | 5 mph9 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 31 | 53°F12°C | 73°F23°C | 4 mph6 km/h from Northwest | Mostly Clear | Clear |
| November 1 | 54°F12°C | 78°F26°C | 3 mph5 km/h from North | Clear | Clear |
| November 2 | 56°F13°C | 78°F26°C | 3 mph5 km/h from North | Mostly Clear | Partly Cloudy |
| November 3 | 54°F12°C | 69°F21°C | 3 mph6 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| November 4 | 52°F11°C | 68°F20°C | 4 mph6 km/h from Southwest | Mostly Clear | Partly Cloudy |
| November 5 | 54°F12°C | 64°F18°C | 8 mph13 km/h from South | Drizzle | Mostly Cloudy |
| November 6 | 54°F12°C | 69°F20°C | 6 mph9 km/h from North | Mostly Clear | Clear |
Yes
Low of 54°F12°C, High of 78°F26°CWind: 3 mph5 km/h
Precipitation: None