Average data for 10 years
1 August
Friday
+30°
+18°
2 August
Saturday
+30°
+19°
3 August
Sunday
+29°
+19°
4 August
Monday
+29°
+18°
5 August
Tuesday
+29°
+18°
6 August
Wednesday
+29°
+18°
7 August
Thursday
+30°
+18°
8 August
Friday
+30°
+18°
9 August
Saturday
+29°
+18°
10 August
Sunday
+29°
+18°
11 August
Monday
+29°
+18°
12 August
Tuesday
+29°
+18°
13 August
Wednesday
+29°
+18°
14 August
Thursday
+29°
+18°
15 August
Friday
+29°
+18°
16 August
Saturday
+29°
+18°
17 August
Sunday
+29°
+18°
18 August
Monday
+29°
+18°
19 August
Tuesday
+29°
+18°
20 August
Wednesday
+29°
+18°
21 August
Thursday
+29°
+18°
22 August
Friday
+29°
+17°
23 August
Saturday
+29°
+18°
24 August
Sunday
+29°
+18°
25 August
Monday
+29°
+18°
26 August
Tuesday
+29°
+18°
27 August
Wednesday
+29°
+17°
28 August
Thursday
+27°
+17°
29 August
Friday
+28°
+17°
30 August
Saturday
+27°
+17°
31 August
Sunday
+27°
+16°
In August, the weather in Siena is typically hot. Average daily high temperature in August is about 29 degrees above zero. On average, Siena has 18 sunny, 7 rainy, and 6 partly cloudy days in August. The rains are usually moderate.