Yes

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

Why? Because it's pretty chilly!
51°F11°C & Mostly Cloudy

Wind is 2 mph3 km/h from the South, gusting to 4 mph6 km/h
November 3
1pm51°F11°C2 mph4 km/h SouthMostly Cloudy
2pm52°F11°C3 mph4 km/h SouthwestMostly Cloudy
3pm52°F11°C3 mph4 km/h SouthwestHaze
4pm54°F12°C3 mph5 km/h SouthwestHaze
5pm57°F14°C5 mph7 km/h WestPartly Cloudy
6pm59°F15°C6 mph9 km/h WestPartly Cloudy
7pm60°F16°C6 mph10 km/h WestMostly Clear
8pm62°F17°C6 mph9 km/h WestMostly Clear
9pm63°F17°C5 mph9 km/h NorthwestMostly Clear
10pm63°F17°C6 mph10 km/h NorthwestClear
11pm61°F16°C5 mph9 km/h WestClear
November 4
12am60°F16°C4 mph7 km/h WestClear
DateLowHighWindDayNight
November 350°F10°C63°F17°C5 mph7 km/h from WestMostly ClearClear
November 450°F10°C66°F19°C4 mph6 km/h from WestMostly ClearMostly Cloudy
November 551°F10°C65°F19°C7 mph11 km/h from SouthRainMostly Cloudy
November 652°F11°C64°F18°C3 mph6 km/h from NorthwestMostly ClearMostly Clear
November 749°F10°C66°F19°C3 mph5 km/h from NorthwestClearMostly Clear
November 853°F11°C69°F21°C4 mph6 km/h from NorthMostly ClearPartly Cloudy
November 952°F11°C67°F20°C3 mph5 km/h from NorthwestPartly CloudyMostly Cloudy

Yes

Low of 50°F10°C, High of 66°F19°C
Wind: 4 mph6 km/h
Precipitation: None

Support This Page