No
you don't need a jacket based on the weather in San Bernardino, CA, USA 1 second ago
62°F17°C & Mostly Clear
Wind is 2 mph3 km/h from the Northeast, gusting to 3 mph5 km/h
| September 14 | ||||
| 8am | 62°F16°C | 1 mph2 km/h North | Mostly Clear | |
| 9am | 62°F17°C | 2 mph3 km/h North | Mostly Cloudy | |
| 10am | 63°F17°C | 0 mph1 km/h Northeast | Mostly Cloudy | |
| 11am | 64°F18°C | 1 mph2 km/h South | Mostly Cloudy | |
| 12pm | 66°F19°C | 2 mph3 km/h Southwest | Mostly Cloudy | |
| 1pm | 70°F21°C | 2 mph3 km/h Southwest | Partly Cloudy | |
| 2pm | 76°F24°C | 3 mph4 km/h Southwest | Clear | |
| 3pm | 81°F27°C | 4 mph6 km/h Southwest | Clear | |
| 4pm | 86°F30°C | 5 mph8 km/h Southwest | Clear | |
| 5pm | 89°F31°C | 6 mph10 km/h Southwest | Clear | |
| 6pm | 90°F32°C | 8 mph12 km/h Southwest | Clear | |
| 7pm | 90°F32°C | 8 mph14 km/h Southwest | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 14 | 62°F16°C | 90°F32°C | 5 mph7 km/h from Southwest | Mostly Clear | Clear |
| September 15 | 64°F18°C | 95°F35°C | 5 mph7 km/h from Southwest | Clear | Clear |
| September 16 | 69°F21°C | 96°F35°C | 5 mph8 km/h from Southwest | Clear | Mostly Clear |
| September 17 | 71°F21°C | 89°F32°C | 4 mph7 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| September 18 | 71°F22°C | 86°F30°C | 4 mph7 km/h from Southwest | Thunderstorms | Mostly Clear |
| September 19 | 69°F21°C | 88°F31°C | 4 mph6 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 20 | 68°F20°C | 88°F31°C | 5 mph8 km/h from Southwest | Clear | Partly Cloudy |
No
Low of 64°F18°C, High of 95°F35°CWind: 5 mph7 km/h
Precipitation: None