Yes
you do need a jacket based on the weather in Castro Valley, CA, USA 1 second ago
Why? Because a jacket will keep you cozy, but you won't break a seat!
53°F12°C & Mostly Clear
Wind is 9 mph15 km/h from the Southwest, gusting to 16 mph26 km/h
| June 20 | ||||
| 4am | 52°F11°C | 9 mph14 km/h Southwest | Mostly Clear | |
| 5am | 52°F11°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| 6am | 52°F11°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| 7am | 52°F11°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 8am | 51°F11°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 9am | 52°F11°C | 9 mph14 km/h Southwest | Mostly Cloudy | |
| 10am | 53°F12°C | 9 mph14 km/h Southwest | Mostly Cloudy | |
| 11am | 55°F13°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| 12pm | 58°F14°C | 9 mph15 km/h Southwest | Partly Cloudy | |
| 1pm | 60°F15°C | 10 mph15 km/h Southwest | Partly Cloudy | |
| 2pm | 63°F17°C | 11 mph17 km/h West | Mostly Clear | |
| 3pm | 65°F18°C | 12 mph19 km/h West | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| June 20 | 51°F11°C | 68°F20°C | 12 mph19 km/h from West | Mostly Clear | Clear |
| June 21 | 49°F9°C | 73°F23°C | 9 mph14 km/h from West | Clear | Clear |
| June 22 | 50°F10°C | 75°F24°C | 7 mph11 km/h from West | Clear | Mostly Clear |
| June 23 | 51°F11°C | 75°F24°C | 6 mph9 km/h from West | Clear | Partly Cloudy |
| June 24 | 53°F12°C | 72°F22°C | 6 mph10 km/h from West | Mostly Clear | Partly Cloudy |
| June 25 | 53°F12°C | 73°F23°C | 6 mph10 km/h from West | Mostly Clear | Mostly Clear |
| June 26 | 54°F12°C | 75°F24°C | 7 mph10 km/h from Southwest | Partly Cloudy | Mostly Clear |
Yes
Low of 48°F9°C, High of 73°F23°CWind: 9 mph14 km/h
Precipitation: None