Frequent temperatures in Siena through the whole of December is 5. You can expect highs around 9 with lows about 4. The table below has further info:
|Sunshine Per Day||4|
Siena, Italy Weather in December FAQs
Typically what weather am I expecting?
The usual weather is 5 celsius although it does change during the day
On average whats the weather difference summer vs. winter?
The daily average temperate varies by 7 change in average daily temperature
How cold can it get?