Yes
you do need a jacket based on the weather in San Luis Obispo, CA, USA 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
58°F15°C & Mostly Cloudy
Wind is 2 mph4 km/h from the North, gusting to 7 mph12 km/h
| September 11 | ||||
| 8am | 58°F14°C | 3 mph6 km/h Northwest | Mostly Cloudy | |
| 9am | 57°F14°C | 3 mph5 km/h Northwest | Partly Cloudy | |
| 10am | 57°F14°C | 4 mph6 km/h North | Partly Cloudy | |
| 11am | 59°F15°C | 5 mph8 km/h North | Mostly Clear | |
| 12pm | 62°F17°C | 5 mph8 km/h Northwest | Mostly Clear | |
| 1pm | 66°F19°C | 5 mph8 km/h Northwest | Clear | |
| 2pm | 70°F21°C | 6 mph9 km/h Northwest | Clear | |
| 3pm | 73°F23°C | 8 mph13 km/h West | Clear | |
| 4pm | 74°F23°C | 10 mph16 km/h West | Clear | |
| 5pm | 74°F23°C | 11 mph18 km/h West | Clear | |
| 6pm | 73°F23°C | 12 mph19 km/h West | Clear | |
| 7pm | 72°F22°C | 12 mph20 km/h West | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 11 | 57°F14°C | 74°F23°C | 8 mph13 km/h from Northwest | Clear | Mostly Clear |
| September 12 | 55°F13°C | 78°F25°C | 6 mph10 km/h from West | Clear | Mostly Clear |
| September 13 | 56°F14°C | 78°F25°C | 6 mph9 km/h from West | Clear | Clear |
| September 14 | 57°F14°C | 84°F29°C | 5 mph9 km/h from Northwest | Clear | Clear |
| September 15 | 60°F15°C | 83°F28°C | 4 mph6 km/h from West | Clear | Clear |
| September 16 | 61°F16°C | 85°F30°C | 4 mph6 km/h from Southwest | Clear | Mostly Clear |
| September 17 | 62°F17°C | 87°F30°C | 4 mph6 km/h from West | Mostly Clear | Partly Cloudy |
Yes
Low of 55°F13°C, High of 78°F26°CWind: 6 mph10 km/h
Precipitation: None