No
you don't need a jacket based on the weather in Pasadena, CA 91109, USA 1 second ago
73°F23°C & Cloudy
Wind is 2 mph3 km/h from the Northwest, gusting to 5 mph8 km/h
| September 18 | ||||
| 5am | 73°F23°C | 3 mph5 km/h Northwest | Cloudy | |
| 6am | 73°F23°C | 4 mph6 km/h Northwest | Cloudy | |
| 7am | 71°F22°C | 2 mph3 km/h East | Cloudy | |
| 8am | 72°F22°C | 4 mph6 km/h Northwest | Drizzle | |
| 9am | 71°F22°C | 1 mph2 km/h North | Drizzle | |
| 10am | 70°F21°C | 5 mph8 km/h Northwest | Rain | |
| 11am | 70°F21°C | 2 mph4 km/h Northeast | Rain | |
| 12pm | 72°F22°C | 3 mph5 km/h East | Rain | |
| 1pm | 74°F23°C | 4 mph7 km/h Southeast | Thunderstorms | |
| 2pm | 76°F25°C | 6 mph9 km/h Southeast | Partly Cloudy | |
| 3pm | 78°F25°C | 6 mph9 km/h Southeast | Mostly Cloudy | |
| 4pm | 79°F26°C | 6 mph10 km/h South | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 18 | 70°F21°C | 80°F27°C | 5 mph8 km/h from South | Thunderstorms | Drizzle |
| September 19 | 67°F19°C | 83°F28°C | 4 mph7 km/h from South | Mostly Clear | Clear |
| September 20 | 65°F18°C | 86°F30°C | 4 mph7 km/h from Southwest | Clear | Clear |
| September 21 | 66°F19°C | 84°F29°C | 4 mph6 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 22 | 68°F20°C | 88°F31°C | 4 mph7 km/h from South | Mostly Clear | Mostly Clear |
| September 23 | 70°F21°C | 87°F31°C | 4 mph7 km/h from Southwest | Mostly Clear | Clear |
| September 24 | 69°F21°C | 88°F31°C | 4 mph6 km/h from Southwest | Clear | Clear |
No
Low of 67°F20°C, High of 82°F28°CWind: 4 mph7 km/h
Precipitation: 11% rain