Yes
you do need a jacket based on the weather in Rialto, CA, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
54°F12°C & Mostly Cloudy
Wind is 2 mph4 km/h from the West, gusting to 6 mph9 km/h
| May 7 | ||||
| 4am | 54°F12°C | 4 mph6 km/h West | Partly Cloudy | |
| 5am | 52°F11°C | 2 mph3 km/h West | Mostly Clear | |
| 6am | 51°F11°C | 2 mph3 km/h North | Mostly Cloudy | |
| 7am | 51°F11°C | 2 mph4 km/h Northeast | Mostly Cloudy | |
| 8am | 52°F11°C | 2 mph3 km/h Northwest | Cloudy | |
| 9am | 52°F11°C | 3 mph4 km/h West | Cloudy | |
| 10am | 53°F12°C | 2 mph4 km/h West | Mostly Cloudy | |
| 11am | 56°F13°C | 2 mph4 km/h South | Partly Cloudy | |
| 12pm | 59°F15°C | 3 mph5 km/h South | Partly Cloudy | |
| 1pm | 63°F17°C | 3 mph4 km/h South | Mostly Clear | |
| 2pm | 67°F19°C | 3 mph5 km/h Southwest | Clear | |
| 3pm | 71°F22°C | 4 mph6 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 7 | 51°F11°C | 78°F25°C | 5 mph7 km/h from Southwest | Mostly Clear | Clear |
| May 8 | 57°F14°C | 86°F30°C | 4 mph7 km/h from Southwest | Clear | Mostly Clear |
| May 9 | 62°F17°C | 94°F35°C | 4 mph7 km/h from West | Mostly Clear | Clear |
| May 10 | 67°F19°C | 97°F36°C | 5 mph8 km/h from West | Clear | Partly Cloudy |
| May 11 | 66°F19°C | 88°F31°C | 6 mph10 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| May 12 | 55°F13°C | 73°F23°C | 7 mph11 km/h from Southwest | Mostly Clear | Partly Cloudy |
| May 13 | 50°F10°C | 65°F18°C | 6 mph10 km/h from Southwest | Partly Cloudy | Partly Cloudy |
Yes
Low of 56°F14°C, High of 86°F30°CWind: 4 mph7 km/h
Precipitation: None