Yes

you do need a jacket based on the weather in Monterey, CA, USA 15 minutes ago

Why? Because it's cool. Pleasantly cool, but cool!
51°F10°C & Mostly Cloudy

Wind is 2 mph4 km/h from the Southwest, gusting to 4 mph7 km/h
April 22
5am51°F10°C2 mph4 km/h SouthwestMostly Cloudy
6am50°F10°C3 mph5 km/h SouthwestPartly Cloudy
7am50°F10°C3 mph5 km/h SouthwestMostly Cloudy
8am50°F10°C3 mph5 km/h SouthwestMostly Cloudy
9am50°F10°C3 mph5 km/h SouthwestMostly Cloudy
10am50°F10°C4 mph6 km/h SouthwestMostly Cloudy
11am52°F11°C4 mph6 km/h SouthwestMostly Cloudy
12pm55°F13°C4 mph6 km/h SouthwestMostly Cloudy
1pm57°F14°C5 mph7 km/h WestMostly Cloudy
2pm59°F15°C6 mph9 km/h WestMostly Cloudy
3pm61°F16°C7 mph11 km/h WestMostly Cloudy
4pm62°F17°C9 mph14 km/h WestMostly Cloudy
DateLowHighWindDayNight
April 2250°F10°C62°F17°C7 mph11 km/h from WestMostly CloudyPartly Cloudy
April 2350°F10°C59°F15°C9 mph14 km/h from WestMostly CloudyMostly Cloudy
April 2450°F10°C58°F14°C8 mph13 km/h from WestCloudyCloudy
April 2549°F10°C58°F14°C8 mph13 km/h from WestPartly CloudyDrizzle
April 2647°F8°C56°F14°C9 mph14 km/h from WestDrizzleMostly Cloudy
April 2750°F10°C56°F13°C11 mph18 km/h from NorthwestMostly CloudyPartly Cloudy
April 2849°F10°C59°F15°C7 mph12 km/h from WestPartly CloudyMostly Clear

Yes

Low of 50°F10°C, High of 59°F15°C
Wind: 9 mph14 km/h
Precipitation: None

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