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Italy weather

10 day weather forecast for Siena

Saturday, 12th September 2026, at 02:11
today
Sunny
26° 16°
tomorrow
Sunny
26° 16°
Monday
Sunny
27° 17°
Tuesday
Sunny
28° 16°
Wednesday
Sunny
28° 17°
Thursday
Light rain shower
22° 16°
Friday
Patchy rain possible
22° 15°
 More Details See
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Siena Weather Pages

Siena weather forecast

The weather forecast for Siena over the next 5 days indicates warm conditions with temperatures ranging from 26 °C to 28 °C, accompanied by a gentle breeze.

Weather today
Siena weather forecast

Siena 14 days weather forecast

This weeks weather in Siena. Click on a date for detailed forecasts
Sat. 12
26°
16°
Sunny
0 mm
Sun. 13
26°
16°
Sunny
0 mm
Mon. 14
27°
17°
Sunny
0 mm
Tue. 15
28°
16°
Sunny
0 mm
Wed. 16
28°
17°
Sunny
0 mm
Thu. 17
22°
16°
Light rain shower
12.4 mm
Fri. 18
22°
15°
Patchy rain possible
3.5 mm
Sat. 19
22°
14°
Sunny
0.2 mm
Sun. 20
24°
16°
Patchy rain possible
2.5 mm
Mon. 21
26°
16°
Overcast
0 mm
Tue. 22
25°
17°
Sunny
0 mm
Wed. 23
26°
17°
Sunny
0 mm
Thu. 24
27°
16°
Sunny
0 mm
Further Ahead
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Access Siena weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
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Siena long range weather forecast

30 day weather forecast for Siena
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
32°
2
Thundery outbreaks possible
29°
3
Patchy rain possible
30°
4
Sunny
32°
5
Patchy light rain with thunder
30°
6
Sunny
30°
7
Sunny
32°
8
Sunny
30°
9
Sunny
29°
10
Sunny
26°
11
Patchy rain possible
29°
12
Sunny
26°
13
Sunny
26°
14
Sunny
27°
15
Sunny
28°
16
Sunny
28°
17
Light rain shower
22°
18
Patchy rain possible
22°
19
Sunny
22°
20
Patchy rain possible
24°
21
Overcast
26°
22
Sunny
25°
23
Sunny
26°
24
Sunny
27°
25
Partly cloudy
23°
26
Patchy rain possible
25°
27
Sunny
25°
28
Sunny
23°
29
Sunny
23°
30
Partly cloudy
25°
Important Notice
Our Siena long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.

Rain Forecast for the Next 14 Days in Siena

The chart displays the expected rainfall values (in mm) over the next 14 days in Siena, highlighting variations in precipitation levels for specific dates. ☔

Siena Wind Speed Forecast Chart

This chart illustrates the projected daily max wind speed (in km) in Siena over the next two weeks, providing insights into periods of increased or decreased wind activity. 🌀

Frequently asked questions about the weather in Siena

How warm is it in Siena over the next 14 days?
Over the next two weeks, temperatures in Siena are expected to range from around 14 °C on the coldest nights up to about 28 °C on the warmest days. Use this range to plan what to pack and wear.

Will it rain in Siena in the next two weeks?
Yes - rain is expected on about 4 of the next 14 days in Siena, with roughly 18.6 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.

How windy is it in Siena?
Maximum wind speeds in Siena are forecast to reach about 22 km/h at their peak over the next 14 days.

When is the best time to visit Siena?
For a month-by-month look at temperatures and rainfall, see our best time to visit Siena guide.

How accurate is the 14-day forecast for Siena?
Our Siena forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.

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Location coordinates Where is Siena?

Get accurate weather forecasts for Siena, located at latitude 43.318 and longitude 11.331. Stay updated with localized weather information tailored for Siena.

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