Yes

you do need a jacket based on the weather in Pinole, CA 94564, USA 1 second ago

Why? Because it's not very warm out.
59°F15°C & Clear

Wind is 14 mph22 km/h from the W, gusting to 27 mph43 km/h
April 26
11pm57°F14°C13 mph20 km/h WClear
April 27
12am56°F13°C11 mph18 km/h WClear
1am55°F13°C10 mph16 km/h WClear
2am53°F12°C9 mph14 km/h WClear
3am52°F11°C8 mph13 km/h WClear
4am52°F11°C7 mph12 km/h WClear
5am51°F10°C6 mph10 km/h WClear
6am50°F10°C6 mph9 km/h WMostly Clear
7am49°F10°C5 mph9 km/h WClear
8am49°F9°C5 mph8 km/h WClear
9am48°F9°C5 mph8 km/h WMostly Clear
10am49°F9°C5 mph8 km/h WMostly Clear
DateLowHighWindDayNight
April 2652°F11°C65°F19°C13 mph22 km/h from WMostly ClearClear
April 2748°F9°C68°F20°C8 mph13 km/h from WMostly ClearClear
April 2850°F10°C71°F21°C10 mph16 km/h from WClearMostly Clear
April 2949°F9°C71°F22°C9 mph14 km/h from WClearClear
April 3049°F9°C71°F22°C7 mph11 km/h from WClearClear
May 149°F10°C74°F23°C6 mph10 km/h from NWMostly ClearPartly Cloudy
May 251°F10°C75°F24°C7 mph10 km/h from WClearMostly Clear

Yes

Low of 48°F9°C, High of 68°F20°C
Wind: 8 mph13 km/h
Precipitation: None

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