No
you don't need a jacket based on the weather in Mountain View, CA, USA 24 minutes ago
59°F15°C & Mostly Clear
Wind is 1 mph2 km/h from the Southwest, gusting to 4 mph6 km/h
| September 12 | ||||
| 6am | 59°F15°C | 1 mph2 km/h West | Mostly Clear | |
| 7am | 58°F15°C | 2 mph4 km/h West | Partly Cloudy | |
| 8am | 59°F15°C | 2 mph3 km/h South | Partly Cloudy | |
| 9am | 58°F14°C | 3 mph5 km/h South | Partly Cloudy | |
| 10am | 58°F14°C | 3 mph6 km/h South | Partly Cloudy | |
| 11am | 60°F15°C | 3 mph5 km/h South | Mostly Clear | |
| 12pm | 63°F17°C | 2 mph4 km/h Southeast | Mostly Clear | |
| 1pm | 67°F19°C | 2 mph3 km/h Northwest | Mostly Clear | |
| 2pm | 71°F21°C | 3 mph4 km/h Northwest | Clear | |
| 3pm | 74°F23°C | 4 mph6 km/h Northwest | Clear | |
| 4pm | 76°F25°C | 5 mph9 km/h Northwest | Clear | |
| 5pm | 77°F25°C | 7 mph11 km/h Northwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 12 | 58°F14°C | 78°F25°C | 5 mph8 km/h from Northwest | Clear | Mostly Clear |
| September 13 | 56°F13°C | 75°F24°C | 5 mph8 km/h from Northwest | Mostly Clear | Partly Cloudy |
| September 14 | 59°F15°C | 77°F25°C | 6 mph10 km/h from Northwest | Mostly Clear | Mostly Clear |
| September 15 | 55°F13°C | 86°F30°C | 4 mph6 km/h from North | Clear | Clear |
| September 16 | 61°F16°C | 86°F30°C | 4 mph6 km/h from Northwest | Clear | Clear |
| September 17 | 57°F14°C | 84°F29°C | 4 mph6 km/h from Northwest | Clear | Clear |
| September 18 | 57°F14°C | 81°F27°C | 4 mph6 km/h from Northwest | Clear | Mostly Clear |
Yes
Low of 56°F14°C, High of 75°F24°CWind: 5 mph8 km/h
Precipitation: None