Yes
you do need a jacket based on the weather in Pasadena, CA, USA 1 second ago
Why? Because it's not very warm out.
54°F12°C & Mostly Clear
Wind is 2 mph3 km/h from the SW, gusting to 4 mph7 km/h
| April 20 | ||||
| 2am | 54°F12°C | 2 mph4 km/h SW | Mostly Clear | |
| 3am | 53°F12°C | 2 mph3 km/h NE | Mostly Clear | |
| 4am | 53°F12°C | 2 mph3 km/h SE | Mostly Clear | |
| 5am | 52°F11°C | 2 mph3 km/h SE | Mostly Clear | |
| 6am | 52°F11°C | 1 mph2 km/h E | Partly Cloudy | |
| 7am | 52°F11°C | 1 mph2 km/h SE | Mostly Cloudy | |
| 8am | 51°F11°C | 2 mph2 km/h SE | Mostly Cloudy | |
| 9am | 51°F10°C | 1 mph2 km/h SE | Mostly Cloudy | |
| 10am | 52°F11°C | 1 mph2 km/h E | Mostly Cloudy | |
| 11am | 53°F12°C | 2 mph3 km/h SE | Mostly Cloudy | |
| 12pm | 55°F13°C | 2 mph3 km/h S | Mostly Cloudy | |
| 1pm | 57°F14°C | 2 mph3 km/h S | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 19 | 53°F12°C | 71°F21°C | 2 mph4 km/h from S | Partly Cloudy | Mostly Clear |
| April 20 | 51°F10°C | 74°F23°C | 4 mph6 km/h from SW | Mostly Clear | Mostly Clear |
| April 21 | 55°F13°C | 81°F27°C | 4 mph7 km/h from SW | Clear | Mostly Clear |
| April 22 | 55°F13°C | 75°F24°C | 5 mph8 km/h from S | Mostly Clear | Partly Cloudy |
| April 23 | 53°F11°C | 69°F21°C | 5 mph8 km/h from S | Mostly Clear | Mostly Clear |
| April 24 | 50°F10°C | 66°F19°C | 5 mph8 km/h from SW | Partly Cloudy | Partly Cloudy |
| April 25 | 49°F10°C | 64°F18°C | 5 mph8 km/h from SW | Partly Cloudy | Mostly Cloudy |
Yes
Low of 51°F11°C, High of 73°F23°CWind: 4 mph6 km/h
Precipitation: None