Yes
you do need a jacket based on the weather in Hayward, CA, USA 1 second ago
Why? Because it's pretty chilly.
54°F12°C & Clear
Wind is 7 mph12 km/h from the W, gusting to 17 mph28 km/h
| April 27 | ||||
| 12am | 54°F12°C | 7 mph12 km/h W | Mostly Clear | |
| 1am | 53°F12°C | 6 mph10 km/h W | Mostly Clear | |
| 2am | 52°F11°C | 5 mph8 km/h W | Mostly Clear | |
| 3am | 51°F10°C | 5 mph8 km/h W | Mostly Clear | |
| 4am | 50°F10°C | 5 mph7 km/h SW | Mostly Clear | |
| 5am | 49°F10°C | 4 mph7 km/h SW | Mostly Clear | |
| 6am | 48°F9°C | 4 mph6 km/h SW | Mostly Clear | |
| 7am | 48°F9°C | 4 mph6 km/h SW | Mostly Clear | |
| 8am | 48°F9°C | 3 mph5 km/h SW | Partly Cloudy | |
| 9am | 48°F9°C | 3 mph5 km/h SW | Partly Cloudy | |
| 10am | 49°F10°C | 3 mph5 km/h SW | Partly Cloudy | |
| 11am | 51°F11°C | 4 mph6 km/h SW | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 26 | 51°F10°C | 63°F17°C | 11 mph17 km/h from W | Partly Cloudy | Mostly Clear |
| April 27 | 48°F9°C | 65°F18°C | 8 mph13 km/h from W | Mostly Clear | Mostly Clear |
| April 28 | 49°F9°C | 67°F20°C | 9 mph15 km/h from W | Mostly Clear | Mostly Clear |
| April 29 | 49°F9°C | 67°F19°C | 8 mph13 km/h from W | Mostly Clear | Clear |
| April 30 | 46°F8°C | 68°F20°C | 7 mph11 km/h from W | Clear | Clear |
| May 1 | 46°F8°C | 71°F22°C | 7 mph11 km/h from NW | Clear | Mostly Clear |
| May 2 | 49°F10°C | 72°F22°C | 6 mph10 km/h from W | Mostly Clear | Mostly Clear |
Yes
Low of 47°F9°C, High of 65°F19°CWind: 8 mph13 km/h
Precipitation: None