Yes

you do need a jacket based on the weather in Fremont, CA 94536, USA 1 second ago

Why? Because it's not very warm out!
53°F11°C & Cloudy

Wind is 7 mph11 km/h from the West, gusting to 14 mph23 km/h
April 25
1am52°F11°C7 mph11 km/h WestCloudy
2am52°F11°C6 mph9 km/h WestCloudy
3am51°F11°C5 mph7 km/h WestCloudy
4am51°F11°C5 mph8 km/h WestCloudy
5am51°F10°C5 mph8 km/h WestCloudy
6am50°F10°C5 mph8 km/h WestCloudy
7am50°F10°C5 mph7 km/h SouthwestCloudy
8am50°F10°C5 mph9 km/h SouthwestCloudy
9am50°F10°C5 mph8 km/h SouthwestCloudy
10am50°F10°C5 mph9 km/h SouthwestCloudy
11am51°F10°C6 mph10 km/h SouthwestCloudy
12pm52°F11°C6 mph10 km/h SouthwestCloudy
DateLowHighWindDayNight
April 2451°F11°C57°F14°C6 mph10 km/h from WestCloudyCloudy
April 2550°F10°C59°F15°C7 mph12 km/h from WestCloudyMostly Cloudy
April 2646°F8°C61°F16°C6 mph10 km/h from WestMostly CloudyRain
April 2750°F10°C60°F16°C6 mph10 km/h from WestMostly CloudyMostly Clear
April 2848°F9°C70°F21°C5 mph8 km/h from WestClearClear
April 2951°F10°C73°F23°C5 mph7 km/h from NorthwestMostly ClearMostly Clear
April 3052°F11°C74°F23°C5 mph8 km/h from WestMostly ClearMostly Clear

Yes

Low of 50°F10°C, High of 59°F15°C
Wind: 7 mph12 km/h
Precipitation: None

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