No

you don't need a jacket based on the weather in San Jose, CA 95148, USA 1 second ago

70°F21°C & Clear

Wind is 4 mph7 km/h from the W, gusting to 12 mph20 km/h
September 24
5pm72°F22°C5 mph8 km/h WClear
6pm74°F23°C6 mph10 km/h WMostly Clear
7pm73°F23°C7 mph11 km/h NWMostly Clear
8pm71°F22°C7 mph12 km/h NWClear
9pm69°F20°C7 mph11 km/h NWClear
10pm64°F18°C5 mph8 km/h NWClear
11pm61°F16°C3 mph5 km/h NWClear
September 25
12am59°F15°C2 mph3 km/h NWMostly Clear
1am58°F14°C1 mph2 km/h SEMostly Clear
2am57°F14°C2 mph3 km/h SEPartly Cloudy
3am56°F13°C2 mph3 km/h SEMostly Cloudy
4am56°F13°C2 mph4 km/h SEMostly Cloudy
DateLowHighWindDayNight
September 2452°F11°C74°F23°C4 mph7 km/h from WMostly ClearPartly Cloudy
September 2551°F11°C75°F24°C4 mph7 km/h from SWMostly ClearMostly Clear
September 2657°F14°C74°F24°C6 mph10 km/h from NWMostly ClearClear
September 2753°F11°C75°F24°C8 mph12 km/h from NWClearClear
September 2852°F11°C76°F25°C5 mph9 km/h from NWClearClear
September 2953°F11°C73°F23°C5 mph9 km/h from NWMostly ClearPartly Cloudy
September 3051°F11°C72°F22°C6 mph10 km/h from NWMostly ClearClear

Yes

Low of 51°F11°C, High of 74°F24°C
Wind: 4 mph7 km/h
Precipitation: None

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