No
you don't need a jacket based on the weather in San Bernardino, CA, USA 1 second ago
80°F27°C & Clear
Wind is 4 mph7 km/h from the North, gusting to 9 mph14 km/h
| October 18 | ||||
| 1am | 77°F25°C | 6 mph9 km/h North | Clear | |
| 2am | 72°F22°C | 7 mph12 km/h Southwest | Clear | |
| 3am | 68°F20°C | 4 mph7 km/h Southwest | Clear | |
| 4am | 65°F18°C | 4 mph7 km/h East | Clear | |
| 5am | 63°F17°C | 4 mph6 km/h Northeast | Clear | |
| 6am | 61°F16°C | 4 mph6 km/h Northeast | Clear | |
| 7am | 60°F16°C | 4 mph6 km/h Northeast | Clear | |
| 8am | 59°F15°C | 5 mph7 km/h Northeast | Clear | |
| 9am | 58°F14°C | 4 mph6 km/h Northeast | Clear | |
| 10am | 57°F14°C | 5 mph8 km/h Northeast | Clear | |
| 11am | 56°F13°C | 3 mph5 km/h Northeast | Clear | |
| 12pm | 55°F13°C | 4 mph6 km/h Northeast | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| October 17 | 55°F13°C | 82°F28°C | 4 mph7 km/h from Northwest | Clear | Clear |
| October 18 | 54°F12°C | 84°F29°C | 3 mph4 km/h from Southwest | Clear | Mostly Clear |
| October 19 | 56°F13°C | 82°F28°C | 3 mph5 km/h from West | Mostly Clear | Clear |
| October 20 | 54°F12°C | 85°F29°C | 3 mph4 km/h from Southwest | Clear | Clear |
| October 21 | 57°F14°C | 79°F26°C | 4 mph6 km/h from Southwest | Clear | Mostly Cloudy |
| October 22 | 55°F13°C | 69°F20°C | 3 mph5 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| October 23 | 54°F12°C | 76°F24°C | 3 mph5 km/h from Southwest | Clear | Clear |
Yes
Low of 54°F12°C, High of 83°F29°CWind: 3 mph4 km/h
Precipitation: None