Yes

you do need a jacket based on the weather in Hayward, CA 94545, USA 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Partly Cloudy

Wind is 2 mph4 km/h from the Southeast, gusting to 4 mph6 km/h
November 2
9am54°F12°C3 mph4 km/h EastMostly Cloudy
10am53°F12°C2 mph3 km/h SoutheastMostly Cloudy
11am53°F12°C2 mph3 km/h SoutheastMostly Cloudy
12pm53°F12°C2 mph3 km/h SoutheastMostly Cloudy
1pm52°F11°C2 mph3 km/h EastMostly Cloudy
2pm52°F11°C2 mph4 km/h SoutheastMostly Cloudy
3pm52°F11°C2 mph3 km/h EastMostly Cloudy
4pm54°F12°C2 mph3 km/h EastPartly Cloudy
5pm57°F14°C1 mph2 km/h WestPartly Cloudy
6pm60°F16°C2 mph3 km/h SouthwestMostly Clear
7pm64°F18°C2 mph4 km/h WestMostly Clear
8pm66°F19°C3 mph5 km/h WestMostly Clear
DateLowHighWindDayNight
November 252°F11°C71°F22°C4 mph6 km/h from WestMostly ClearMostly Clear
November 354°F12°C65°F18°C4 mph7 km/h from WestMostly ClearMostly Clear
November 451°F11°C69°F20°C4 mph6 km/h from SouthwestPartly CloudyRain
November 557°F14°C65°F18°C10 mph16 km/h from SouthRainPartly Cloudy
November 655°F13°C65°F19°C3 mph6 km/h from NorthwestMostly ClearPartly Cloudy
November 754°F12°C66°F19°C3 mph5 km/h from WestPartly CloudyPartly Cloudy
November 854°F12°C70°F21°C3 mph4 km/h from NorthwestPartly CloudyPartly Cloudy

Yes

Low of 54°F12°C, High of 65°F19°C
Wind: 4 mph7 km/h
Precipitation: None

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