No
you don't need a jacket based on the weather in Sunnyvale, CA 94087, USA 1 second ago
78°F26°C & Clear
Wind is 8 mph13 km/h from the North, gusting to 14 mph22 km/h
| August 11 | ||||
| 6pm | 78°F26°C | 9 mph14 km/h North | Clear | |
| 7pm | 78°F25°C | 9 mph14 km/h North | Clear | |
| 8pm | 76°F24°C | 8 mph13 km/h North | Clear | |
| 9pm | 74°F23°C | 7 mph12 km/h North | Clear | |
| 10pm | 71°F21°C | 7 mph11 km/h North | Clear | |
| 11pm | 66°F19°C | 6 mph9 km/h North | Clear | |
| August 12 | ||||
| 12am | 64°F18°C | 4 mph7 km/h North | Mostly Clear | |
| 1am | 63°F17°C | 3 mph5 km/h Northwest | Mostly Clear | |
| 2am | 62°F16°C | 2 mph4 km/h Northwest | Mostly Clear | |
| 3am | 61°F16°C | 2 mph4 km/h Northwest | Mostly Clear | |
| 4am | 60°F15°C | 3 mph4 km/h Northwest | Mostly Clear | |
| 5am | 59°F15°C | 2 mph4 km/h Northwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 11 | 61°F16°C | 78°F26°C | 5 mph8 km/h from North | Mostly Clear | Mostly Clear |
| August 12 | 55°F13°C | 80°F27°C | 5 mph8 km/h from Northwest | Clear | Mostly Clear |
| August 13 | 55°F13°C | 79°F26°C | 5 mph8 km/h from Northwest | Mostly Clear | Mostly Clear |
| August 14 | 56°F13°C | 79°F26°C | 4 mph7 km/h from Northwest | Mostly Clear | Clear |
| August 15 | 57°F14°C | 84°F29°C | 5 mph7 km/h from Northwest | Clear | Mostly Clear |
| August 16 | 59°F15°C | 78°F26°C | 6 mph9 km/h from West | Partly Cloudy | Mostly Cloudy |
| August 17 | 61°F16°C | 78°F25°C | 6 mph9 km/h from Northwest | Mostly Clear | Mostly Clear |
Yes
Low of 55°F13°C, High of 81°F27°CWind: 5 mph8 km/h
Precipitation: None