Yes
you do need a jacket based on the weather in Hayward, CA, USA 1 second ago
Why? Because the air feels like the cozy middle ground between summer and winter and it's on the windy side!
52°F11°C & Mostly Cloudy
Wind is 11 mph17 km/h from the West, gusting to 25 mph40 km/h
| March 14 | ||||
| 10pm | 51°F11°C | 10 mph17 km/h West | Partly Cloudy | |
| 11pm | 49°F10°C | 8 mph13 km/h West | Mostly Cloudy | |
| March 15 | ||||
| 12am | 49°F9°C | 6 mph10 km/h West | Mostly Cloudy | |
| 1am | 48°F9°C | 6 mph10 km/h West | Partly Cloudy | |
| 2am | 47°F9°C | 6 mph10 km/h West | Partly Cloudy | |
| 3am | 46°F8°C | 6 mph9 km/h West | Partly Cloudy | |
| 4am | 45°F7°C | 4 mph6 km/h West | Partly Cloudy | |
| 5am | 46°F8°C | 5 mph8 km/h West | Mostly Clear | |
| 6am | 45°F7°C | 5 mph8 km/h West | Partly Cloudy | |
| 7am | 45°F7°C | 4 mph7 km/h Southwest | Mostly Cloudy | |
| 8am | 44°F7°C | 4 mph6 km/h Southwest | Mostly Cloudy | |
| 9am | 44°F7°C | 3 mph6 km/h South | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| March 14 | 42°F6°C | 57°F14°C | 10 mph17 km/h from Southwest | Drizzle | Partly Cloudy |
| March 15 | 43°F6°C | 58°F14°C | 6 mph9 km/h from Southwest | Partly Cloudy | Mostly Clear |
| March 16 | 43°F6°C | 61°F16°C | 11 mph18 km/h from South | Mostly Cloudy | Rain |
| March 17 | 46°F8°C | 56°F13°C | 12 mph20 km/h from West | Rain | Clear |
| March 18 | 42°F5°C | 58°F14°C | 5 mph8 km/h from West | Mostly Clear | Partly Cloudy |
| March 19 | 39°F4°C | 58°F15°C | 4 mph7 km/h from Southwest | Cloudy | Drizzle |
| March 20 | 46°F8°C | 59°F15°C | 5 mph9 km/h from Northwest | Partly Cloudy | Mostly Cloudy |
Yes
Low of 44°F7°C, High of 58°F15°CWind: 6 mph9 km/h
Precipitation: None