No
you don't need a jacket based on the weather in Fontana, CA, USA 1 second ago
68°F20°C & Clear
Wind is 5 mph8 km/h from the Southwest, gusting to 15 mph24 km/h
| September 11 | ||||
| 1am | 68°F20°C | 3 mph5 km/h Southwest | Clear | |
| 2am | 66°F19°C | 3 mph4 km/h South | Clear | |
| 3am | 65°F18°C | 3 mph4 km/h South | Clear | |
| 4am | 63°F17°C | 2 mph3 km/h South | Clear | |
| 5am | 62°F17°C | 1 mph2 km/h Southeast | Clear | |
| 6am | 61°F16°C | 2 mph3 km/h Northwest | Clear | |
| 7am | 60°F16°C | 2 mph3 km/h North | Mostly Clear | |
| 8am | 60°F16°C | 2 mph2 km/h West | Mostly Clear | |
| 9am | 60°F15°C | 2 mph3 km/h West | Mostly Clear | |
| 10am | 60°F15°C | 1 mph2 km/h Northeast | Partly Cloudy | |
| 11am | 62°F17°C | 1 mph2 km/h Southeast | Partly Cloudy | |
| 12pm | 65°F18°C | 2 mph3 km/h Southwest | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 64°F18°C | 80°F27°C | 5 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 11 | 59°F15°C | 81°F27°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 12 | 60°F15°C | 81°F27°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 13 | 61°F16°C | 85°F29°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 14 | 63°F17°C | 89°F32°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 15 | 65°F18°C | 92°F33°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 16 | 69°F20°C | 97°F36°C | 5 mph8 km/h from Southwest | Clear | Partly Cloudy |
No
Low of 59°F15°C, High of 81°F27°CWind: 5 mph8 km/h
Precipitation: None