S
M
T
W
T
F
S
1
63°
53°
2
61°
54°
3
62°
53°
4
63°
58°
5
61°
56°
6
61°
57°
7
65°
56°
8
64°
56°
9
64°
56°
10
65°
54°
11
64°
53°
12
67°
56°
13
64°
53°
14
62°
53°
15
62°
54°
16
59°
53°
17
63°
53°
18
60°
48°
19
56°
48°
20
62°
51°
21
60°
50°
22
58°
50°
23
59°
51°
24
60°
50°
25
62°
56°
26
63°
46°
27
53°
45°
28
56°
49°
29
62°
53°
30
64°
52°
31
58°
50°
1
58°
50°
2
55°
51°
3
60°
53°
4
65°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Siena
Siena's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Siena. See also: April | May | June.
