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Weather in Siena
Summer temperatures vary between 25°C-35°C (77°F-95°F) in Siena and July and August brings key events such as the Palio horse race and International Jazz Festival. Autumn brings more comfortable temperatures whilst the city is still brimming with events and arts festivals. But if you're in the city in October, pack your waterproofs and wellies as showers are frequent and temperatures begin to drop. Winters are very cold and temperatures drop to single digit figures. Meanwhile, spring is a pleasant time to visit when the city's flowers are beginning to bloom and many street festivals get into full swing.
Night
| Weather (night) | Temp (min night) | Rain (mm) | Wind (mph) | Humidity Pressure Visibility | ||
|---|---|---|---|---|---|---|
| Sun |
Clear
|
Clear skies |
2 0 °C |
1.9mm |
2
ene |
81%
1,016mb Good |
| Mon |
Clear
|
Clear skies |
2 1 °C |
1.8mm |
2
e |
79%
1,016mb Good |
| Tue |
Clear
|
Clear skies |
1 9 °C |
1.8mm |
1
ene |
88%
1,016mb Good |
| Wed |
Clear
|
Clear skies |
2 0 °C |
1mm |
2
n |
83%
1,016mb Good |
| Thu |
Clear
|
Clear skies |
2 1 °C |
0.8mm |
2
e |
79%
1,015mb Good |
| Fri |
Clear
|
Clear skies |
2 0 °C |
0.1mm |
1
ene |
79%
1,013mb Good |
| Sat |
Clear
|
Clear skies |
2 0 °C |
0.1mm |
2
n |
79%
1,014mb Good |
| Sun |
Occ Light Rain
|
Patchy rain possible |
2 2 °C |
0mm |
6
sw |
71%
1,011mb Moderate |
| Mon |
Heavy Rain Swrs Day
|
Torrential rain shower |
1 9 °C |
0mm |
0
sw |
81%
1,009mb Poor |
Last updated at 04:06, Tuesday 27 August
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Last updated: We update the weather data for Siena from our weather partner every four hours. The time the last update was received is detailed here.
Actual Forecast Location: We have 830+ weather locations on the worldtravelguide.net website. Where no exact location is available we have used the nearest appropriate forecast point.
Symbols indicate the predominant weather for the day in question, calculated based on a weighting of different types of weather. So if a day is forecast to be sunny with the possibility of a brief shower, then we will see a sunny or partly cloudy symbol rather than a rain cloud. For the purpose of this forecast, 'day' is the entire 24 our period 00:00 to 23:59
The maximum temperature is the highest temperature forecast between dawn and dusk, and the minimum temperature is the lowest temperature expected from dusk on the day in question to dawn the next day. The temperature is in °C, or Celsius.
Wind speed and direction are the conditions expected at midday. Wind direction is based on a 16 point compass. W, SW, SSW, etc. The wind direction states where the wind originates. Wind speed is listed in MPH or miles per hour.
Humidity levels indicates how much water vapour the air contains compared to the maximum it could contain at that temperature. As a general guide:
- 0 to 30 is very low
- 31 to 50 is low
- 51 to 70 is moderate to low
- 71 to 80 is moderate
- 81 to 90 is moderate to high
- 91 to 100 is high
Pressure is measured in millibars (mb)
Visibility based on whether the human eye can see the following distances:
- Very poor - less than 1km
- Poor - between 1km and 4km
- Moderate - between 4km and 10km
- Good - between 10km and 20km
- Very good - between 20km and 40km
- Excellent - more than 40km
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