No
you don't need a jacket based on the weather in 53100 Siena, Province of Siena, Italy 1 second ago
81°F27°C & Partly Cloudy
Wind is 7 mph11 km/h from the South, gusting to 16 mph25 km/h
| September 1 | ||||
| 11am | 80°F27°C | 8 mph12 km/h South | Partly Cloudy | |
| 12pm | 79°F26°C | 9 mph14 km/h South | Partly Cloudy | |
| 1pm | 76°F24°C | 8 mph13 km/h Southwest | Mostly Cloudy | |
| 2pm | 73°F23°C | 7 mph11 km/h Southwest | Mostly Clear | |
| 3pm | 71°F22°C | 6 mph10 km/h Southwest | Mostly Clear | |
| 4pm | 70°F21°C | 4 mph7 km/h South | Partly Cloudy | |
| 5pm | 69°F20°C | 4 mph7 km/h South | Mostly Cloudy | |
| 6pm | 68°F20°C | 5 mph8 km/h South | Partly Cloudy | |
| 7pm | 67°F20°C | 4 mph7 km/h Southeast | Mostly Cloudy | |
| 8pm | 67°F19°C | 4 mph7 km/h East | Cloudy | |
| 9pm | 67°F19°C | 4 mph7 km/h East | Cloudy | |
| 10pm | 66°F19°C | 4 mph7 km/h East | Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| August 31 | 60°F15°C | 81°F27°C | 6 mph9 km/h from South | Mostly Clear | Thunderstorms |
| September 1 | 62°F17°C | 75°F24°C | 8 mph13 km/h from West | Rain | Mostly Clear |
| September 2 | 58°F14°C | 78°F25°C | 6 mph9 km/h from Northwest | Partly Cloudy | Clear |
| September 3 | 58°F14°C | 82°F28°C | 2 mph3 km/h from Northwest | Clear | Clear |
| September 4 | 59°F15°C | 81°F27°C | 5 mph8 km/h from Northwest | Mostly Clear | Clear |
| September 5 | 57°F14°C | 82°F28°C | 2 mph4 km/h from Northwest | Partly Cloudy | Partly Cloudy |
| September 6 | 59°F15°C | 80°F27°C | 4 mph6 km/h from North | Mostly Cloudy | Partly Cloudy |
No
Low of 62°F17°C, High of 75°F24°CWind: 8 mph13 km/h
Precipitation: 51% rain