Yes

you do need a jacket based on the weather in San Jose, CA 95130, USA 1 second ago

Why? Because sorry, it's too cool for just a hoodie!
50°F10°C & Partly Cloudy

Wind is 2 mph3 km/h from the Southwest, gusting to 3 mph5 km/h
May 14
7am49°F10°C3 mph5 km/h SouthwestClear
8am49°F9°C1 mph2 km/h SouthwestClear
9am48°F9°C2 mph3 km/h SouthwestClear
10am50°F10°C2 mph3 km/h SouthClear
11am54°F12°C2 mph3 km/h SoutheastClear
12pm59°F15°C2 mph3 km/h EastClear
1pm63°F17°C2 mph3 km/h NortheastClear
2pm67°F20°C2 mph4 km/h NorthClear
3pm71°F22°C3 mph5 km/h NorthClear
4pm74°F23°C4 mph7 km/h NorthClear
5pm75°F24°C6 mph9 km/h NorthwestClear
6pm76°F24°C7 mph12 km/h NorthwestMostly Clear
DateLowHighWindDayNight
May 1448°F9°C76°F24°C5 mph8 km/h from NorthwestMostly ClearMostly Clear
May 1548°F9°C78°F26°C6 mph9 km/h from NorthwestMostly ClearPartly Cloudy
May 1652°F11°C76°F24°C5 mph9 km/h from NorthwestMostly ClearPartly Cloudy
May 1751°F11°C64°F18°C10 mph16 km/h from WestPartly CloudyMostly Clear
May 1849°F9°C74°F24°C7 mph12 km/h from NorthwestClearClear
May 1954°F12°C84°F29°C7 mph12 km/h from NorthwestClearClear
May 2055°F13°C81°F27°C6 mph9 km/h from NorthwestClearClear

Yes

Low of 48°F9°C, High of 78°F26°C
Wind: 6 mph9 km/h
Precipitation: None

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