Yes
you do need a jacket based on the weather in Fontana, CA, USA 1 second ago
Why? Because it's pretty chilly.
59°F15°C & Clear
Wind is 4 mph6 km/h from the W, gusting to 10 mph16 km/h
| April 20 | ||||
| 2am | 58°F14°C | 3 mph4 km/h W | Clear | |
| 3am | 57°F14°C | 2 mph3 km/h SW | Clear | |
| 4am | 56°F13°C | 1 mph2 km/h W | Clear | |
| 5am | 55°F13°C | 2 mph2 km/h W | Mostly Clear | |
| 6am | 54°F12°C | 2 mph3 km/h W | Mostly Clear | |
| 7am | 53°F12°C | 2 mph2 km/h N | Partly Cloudy | |
| 8am | 52°F11°C | 1 mph2 km/h NW | Partly Cloudy | |
| 9am | 51°F11°C | 2 mph3 km/h W | Partly Cloudy | |
| 10am | 52°F11°C | 2 mph3 km/h SW | Mostly Cloudy | |
| 11am | 53°F12°C | 2 mph3 km/h SW | Mostly Cloudy | |
| 12pm | 55°F13°C | 2 mph3 km/h SW | Mostly Cloudy | |
| 1pm | 57°F14°C | 3 mph4 km/h SW | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 19 | 52°F11°C | 71°F22°C | 4 mph7 km/h from SW | Partly Cloudy | Mostly Clear |
| April 20 | 51°F11°C | 76°F24°C | 4 mph7 km/h from SW | Mostly Clear | Clear |
| April 21 | 56°F14°C | 85°F29°C | 6 mph9 km/h from SW | Clear | Clear |
| April 22 | 58°F14°C | 79°F26°C | 6 mph10 km/h from SW | Clear | Partly Cloudy |
| April 23 | 54°F12°C | 71°F22°C | 6 mph9 km/h from SW | Mostly Clear | Mostly Clear |
| April 24 | 51°F10°C | 68°F20°C | 6 mph9 km/h from SW | Mostly Clear | Partly Cloudy |
| April 25 | 50°F10°C | 63°F17°C | 6 mph10 km/h from SW | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 51°F11°C, High of 76°F25°CWind: 4 mph7 km/h
Precipitation: None