Yes

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

Why? Because it's pretty chilly!
57°F14°C & Clear

Wind is 2 mph4 km/h from the West, gusting to 8 mph13 km/h
June 4
5am57°F14°C3 mph4 km/h WestClear
6am55°F13°C3 mph4 km/h WestMostly Clear
7am54°F12°C2 mph3 km/h WestMostly Clear
8am54°F12°C2 mph3 km/h SouthMostly Clear
9am53°F12°C2 mph3 km/h SouthMostly Clear
10am55°F13°C1 mph2 km/h SouthPartly Cloudy
11am58°F14°C2 mph3 km/h SouthwestMostly Clear
12pm62°F17°C2 mph4 km/h WestMostly Clear
1pm66°F19°C4 mph6 km/h WestClear
2pm70°F21°C5 mph8 km/h WestClear
3pm74°F23°C6 mph10 km/h WestClear
4pm76°F25°C8 mph12 km/h WestClear
DateLowHighWindDayNight
June 453°F12°C78°F25°C6 mph10 km/h from WestClearClear
June 555°F13°C78°F26°C6 mph10 km/h from WestClearMostly Clear
June 655°F13°C77°F25°C6 mph10 km/h from WestMostly ClearClear
June 756°F13°C77°F25°C6 mph10 km/h from NorthwestClearMostly Clear
June 855°F13°C73°F23°C6 mph10 km/h from WestMostly ClearPartly Cloudy
June 956°F13°C73°F23°C6 mph10 km/h from WestMostly ClearMostly Clear
June 1055°F13°C76°F25°C6 mph9 km/h from WestClearMostly Clear

Yes

Low of 55°F13°C, High of 78°F26°C
Wind: 6 mph10 km/h
Precipitation: None

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