Yes
you do need a jacket based on the weather in Rosemead, CA, USA 1 second ago
Why? Because just cool enough for a jacket, but not warm enough to ditch it!
58°F14°C & Mostly Clear
Wind is 3 mph5 km/h from the North, gusting to 5 mph8 km/h
| May 19 | ||||
| 6am | 57°F14°C | 3 mph5 km/h North | Clear | |
| 7am | 56°F13°C | 3 mph5 km/h North | Clear | |
| 8am | 55°F13°C | 3 mph5 km/h North | Clear | |
| 9am | 55°F13°C | 4 mph6 km/h North | Clear | |
| 10am | 58°F14°C | 2 mph3 km/h North | Clear | |
| 11am | 62°F17°C | 2 mph3 km/h East | Clear | |
| 12pm | 67°F19°C | 1 mph1 km/h South | Clear | |
| 1pm | 70°F21°C | 2 mph3 km/h Southwest | Clear | |
| 2pm | 75°F24°C | 3 mph4 km/h Southwest | Clear | |
| 3pm | 79°F26°C | 4 mph6 km/h Southwest | Clear | |
| 4pm | 82°F28°C | 6 mph9 km/h Southwest | Clear | |
| 5pm | 84°F29°C | 8 mph13 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 19 | 55°F13°C | 84°F29°C | 5 mph8 km/h from Southwest | Clear | Clear |
| May 20 | 60°F16°C | 88°F31°C | 5 mph8 km/h from Southwest | Clear | Clear |
| May 21 | 62°F17°C | 90°F32°C | 5 mph8 km/h from Southwest | Clear | Mostly Clear |
| May 22 | 62°F17°C | 86°F30°C | 5 mph9 km/h from Southwest | Mostly Clear | Partly Cloudy |
| May 23 | 60°F16°C | 81°F27°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| May 24 | 58°F15°C | 78°F25°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| May 25 | 58°F15°C | 77°F25°C | 6 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
No
Low of 60°F16°C, High of 88°F31°CWind: 5 mph8 km/h
Precipitation: None