Yes
you do need a jacket based on the weather in South San Francisco, CA 94080, USA 1 second ago
Why? Because it's not very warm out and it's really really huffing out there!
55°F13°C & Windy
Wind is 20 mph32 km/h from the West, gusting to 40 mph64 km/h
| June 20 | ||||
| 12am | 55°F13°C | 20 mph33 km/h West | Windy | |
| 1am | 55°F13°C | 19 mph30 km/h West | Windy | |
| 2am | 54°F12°C | 17 mph28 km/h West | Windy | |
| 3am | 54°F12°C | 17 mph27 km/h West | Windy | |
| 4am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 5am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 6am | 53°F12°C | 17 mph27 km/h West | Windy | |
| 7am | 53°F12°C | 15 mph24 km/h West | Windy | |
| 8am | 53°F12°C | 15 mph24 km/h West | Mostly Cloudy | |
| 9am | 53°F12°C | 15 mph24 km/h West | Mostly Cloudy | |
| 10am | 54°F12°C | 15 mph24 km/h West | Windy | |
| 11am | 55°F13°C | 15 mph25 km/h West | Windy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 19 | 52°F11°C | 61°F16°C | 13 mph20 km/h from West | Partly Cloudy | Windy |
| June 20 | 53°F12°C | 63°F17°C | 19 mph30 km/h from West | Windy | Clear |
| June 21 | 52°F11°C | 66°F19°C | 12 mph19 km/h from Northwest | Clear | Clear |
| June 22 | 53°F12°C | 66°F19°C | 9 mph15 km/h from West | Clear | Partly Cloudy |
| June 23 | 53°F11°C | 65°F19°C | 7 mph12 km/h from West | Mostly Clear | Mostly Cloudy |
| June 24 | 54°F12°C | 61°F16°C | 9 mph15 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| June 25 | 53°F12°C | 62°F17°C | 9 mph14 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 53°F12°C, High of 63°F17°CWind: 19 mph30 km/h
Precipitation: None