Yes
you do need a jacket based on the weather in Fullerton, CA, USA 1 second ago
Why? Because it's not very warm out.
57°F14°C & Partly Cloudy
Wind is 2 mph4 km/h from the S, gusting to 7 mph12 km/h
| April 19 | ||||
| 3am | 57°F14°C | 3 mph4 km/h S | Mostly Cloudy | |
| 4am | 56°F14°C | 2 mph4 km/h S | Mostly Cloudy | |
| 5am | 56°F14°C | 2 mph4 km/h S | Mostly Cloudy | |
| 6am | 56°F13°C | 2 mph3 km/h S | Mostly Cloudy | |
| 7am | 56°F13°C | 2 mph3 km/h S | Mostly Cloudy | |
| 8am | 55°F13°C | 2 mph3 km/h S | Mostly Cloudy | |
| 9am | 55°F13°C | 2 mph3 km/h S | Mostly Cloudy | |
| 10am | 55°F13°C | 2 mph3 km/h SE | Mostly Cloudy | |
| 11am | 57°F14°C | 2 mph3 km/h SE | Mostly Cloudy | |
| 12pm | 59°F15°C | 2 mph4 km/h S | Mostly Cloudy | |
| 1pm | 61°F16°C | 3 mph5 km/h SW | Mostly Cloudy | |
| 2pm | 65°F18°C | 4 mph6 km/h SW | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 18 | 55°F13°C | 74°F23°C | 4 mph7 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 19 | 55°F13°C | 72°F22°C | 6 mph9 km/h from SW | Mostly Clear | Partly Cloudy |
| April 20 | 55°F13°C | 75°F24°C | 6 mph9 km/h from SW | Mostly Clear | Mostly Clear |
| April 21 | 55°F13°C | 80°F27°C | 6 mph9 km/h from SW | Clear | Mostly Clear |
| April 22 | 56°F13°C | 74°F23°C | 7 mph11 km/h from SW | Mostly Clear | Mostly Cloudy |
| April 23 | 56°F13°C | 70°F21°C | 6 mph10 km/h from SW | Partly Cloudy | Mostly Cloudy |
| April 24 | 55°F13°C | 67°F20°C | 6 mph10 km/h from SW | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 55°F13°C, High of 73°F23°CWind: 6 mph9 km/h
Precipitation: None