Yes
you do need a jacket based on the weather in Mountain View, CA 94040, USA 1 second ago
Why? Because it's not very warm out!
59°F15°C & Cloudy
Wind is 8 mph13 km/h from the South, gusting to 16 mph25 km/h
| December 13 | ||||
| 4pm | 59°F15°C | 8 mph14 km/h South | Cloudy | |
| 5pm | 58°F15°C | 9 mph14 km/h Southeast | Cloudy | |
| 6pm | 58°F14°C | 9 mph15 km/h South | Cloudy | |
| 7pm | 57°F14°C | 10 mph15 km/h South | Cloudy | |
| 8pm | 56°F13°C | 10 mph16 km/h South | Cloudy | |
| 9pm | 55°F13°C | 11 mph17 km/h South | Cloudy | |
| 10pm | 55°F13°C | 12 mph19 km/h South | Cloudy | |
| 11pm | 55°F13°C | 13 mph21 km/h South | Cloudy | |
| December 14 | ||||
| 12am | 54°F12°C | 13 mph22 km/h South | Cloudy | |
| 1am | 54°F12°C | 15 mph25 km/h South | Windy | |
| 2am | 54°F12°C | 16 mph25 km/h South | Rain | |
| 3am | 53°F12°C | 16 mph25 km/h South | Rain | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| December 13 | 49°F9°C | 59°F15°C | 8 mph12 km/h from Southeast | Cloudy | Heavy Rain |
| December 14 | 45°F7°C | 56°F13°C | 12 mph19 km/h from Southwest | Heavy Rain | Mostly Clear |
| December 15 | 40°F5°C | 56°F13°C | 2 mph3 km/h from Northeast | Mostly Clear | Mostly Cloudy |
| December 16 | 40°F4°C | 55°F13°C | 4 mph6 km/h from South | Drizzle | Cloudy |
| December 17 | 42°F6°C | 59°F15°C | 3 mph5 km/h from North | Partly Cloudy | Clear |
| December 18 | 41°F5°C | 60°F16°C | 2 mph3 km/h from Northeast | Mostly Clear | Mostly Cloudy |
| December 19 | 43°F6°C | 62°F17°C | 2 mph2 km/h from Northeast | Partly Cloudy | Partly Cloudy |
Yes
Low of 45°F7°C, High of 56°F14°CWind: 12 mph19 km/h
Precipitation: 90% rain