Yes
you do need a jacket based on the weather in Rancho Cucamonga, CA, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool.
54°F12°C & Cloudy
Wind is 3 mph5 km/h from the SW, gusting to 8 mph13 km/h
| April 27 | ||||
| 1am | 54°F12°C | 4 mph6 km/h SW | Mostly Cloudy | |
| 2am | 53°F12°C | 3 mph5 km/h NE | Partly Cloudy | |
| 3am | 52°F11°C | 4 mph6 km/h NE | Partly Cloudy | |
| 4am | 52°F11°C | 3 mph6 km/h NE | Partly Cloudy | |
| 5am | 51°F11°C | 3 mph5 km/h NE | Mostly Cloudy | |
| 6am | 51°F10°C | 3 mph5 km/h NE | Partly Cloudy | |
| 7am | 50°F10°C | 3 mph5 km/h NE | Mostly Clear | |
| 8am | 49°F9°C | 3 mph5 km/h NE | Mostly Clear | |
| 9am | 48°F9°C | 3 mph5 km/h NE | Partly Cloudy | |
| 10am | 50°F10°C | 2 mph4 km/h NE | Partly Cloudy | |
| 11am | 52°F11°C | 2 mph3 km/h SE | Partly Cloudy | |
| 12pm | 54°F12°C | 3 mph5 km/h S | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| April 26 | 50°F10°C | 62°F17°C | 6 mph10 km/h from SW | Mostly Cloudy | Partly Cloudy |
| April 27 | 48°F9°C | 68°F20°C | 6 mph10 km/h from SW | Mostly Clear | Clear |
| April 28 | 51°F11°C | 74°F23°C | 5 mph9 km/h from SW | Clear | Clear |
| April 29 | 54°F12°C | 76°F24°C | 5 mph8 km/h from SW | Clear | Clear |
| April 30 | 54°F12°C | 75°F24°C | 6 mph9 km/h from SW | Clear | Mostly Clear |
| May 1 | 53°F11°C | 71°F22°C | 5 mph9 km/h from SW | Mostly Clear | Mostly Clear |
| May 2 | 53°F12°C | 74°F23°C | 7 mph11 km/h from N | Partly Cloudy | Partly Cloudy |
Yes
Low of 48°F9°C, High of 68°F20°CWind: 6 mph10 km/h
Precipitation: None