Yes
you do need a jacket based on the weather in Alum Rock (Alum Rock), California, United States 1 second ago
Why? Because it's cool enough your breath is visible, but your nose isn’t red yet!
50°F10°C & Mostly Clear
Wind is 4 mph6 km/h from the Northwest, gusting to 8 mph13 km/h
| May 25 | ||||
| 10am | 52°F11°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 11am | 55°F13°C | 4 mph7 km/h Northwest | Mostly Clear | |
| 12pm | 57°F14°C | 6 mph10 km/h Northwest | Mostly Clear | |
| 1pm | 60°F16°C | 7 mph11 km/h Northwest | Mostly Clear | |
| 2pm | 62°F17°C | 8 mph13 km/h Northwest | Mostly Cloudy | |
| 3pm | 65°F19°C | 9 mph15 km/h Northwest | Partly Cloudy | |
| 4pm | 68°F20°C | 9 mph15 km/h Northwest | Mostly Clear | |
| 5pm | 69°F20°C | 10 mph17 km/h Northwest | Partly Cloudy | |
| 6pm | 69°F21°C | 12 mph19 km/h Northwest | Mostly Clear | |
| 7pm | 69°F20°C | 12 mph19 km/h Northwest | Mostly Clear | |
| 8pm | 67°F20°C | 11 mph18 km/h Northwest | Partly Cloudy | |
| 9pm | 65°F18°C | 10 mph17 km/h Northwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 25 | 50°F10°C | 69°F21°C | 9 mph14 km/h from Northwest | Partly Cloudy | Mostly Cloudy |
| May 26 | 53°F12°C | 72°F22°C | 8 mph13 km/h from Northwest | Mostly Clear | Mostly Clear |
| May 27 | 50°F10°C | 81°F27°C | 5 mph8 km/h from West | Clear | Clear |
| May 28 | 51°F11°C | 73°F23°C | 6 mph9 km/h from Northwest | Mostly Clear | Mostly Clear |
| May 29 | 51°F11°C | 80°F27°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| May 30 | 57°F14°C | 92°F34°C | 5 mph8 km/h from Northwest | Clear | Clear |
| May 31 | 61°F16°C | 88°F31°C | 4 mph7 km/h from Southwest | Mostly Clear | Partly Cloudy |
Yes
Low of 53°F12°C, High of 72°F22°CWind: 8 mph13 km/h
Precipitation: None