Weather in Siena in September

The weather in Siena in September varies radically. Daytime is relatively hot since temperatures get higher than 27 degrees, while the nights are much colder and there are no more than 15 degrees. Therefore, it is recommended to pack for both warm and chilly conditions
Avg Temp
15° - 27°
Avg Rainy Days
10
Avg Dry Days
20
Avg Snow Days
0
Full weather report for today ››

Weather forecast for the next 14 days ››

Weather Facts - Siena in September

* The warmest temperature recorded in in September is 36°C
* The coldest temperature recorded in Siena in September is 4°C
* The average rainfall in Siena in September is 76 mm

Yearly Average for Siena

Max Temp
Min Temp
Rainy Days
Jan.
11°
2°
11
Feb.
13°
3°
8
March
16°
6°
9
April
19°
8°
13
May
25°
13°
10
June
29°
16°
8
July
32°
19°
5
August
32°
19°
7
Sep.
27°
15°
10
Oct.
21°
11°
13
Nov.
15°
7°
15
Dec.
11°
3°
13

Average Temperature in Siena