S
M
T
W
T
F
S
26
75°
43°
27
77°
46°
28
79°
46°
29
81°
46°
30
70°
41°
1
69°
39°
2
75°
43°
3
75°
46°
4
68°
54°
5
63°
56°
6
62°
52°
7
66°
52°
8
67°
54°
9
67°
55°
10
70°
56°
11
71°
54°
12
72°
55°
13
66°
56°
14
67°
54°
15
67°
54°
16
68°
53°
17
69°
52°
18
70°
56°
19
73°
57°
20
71°
58°
21
71°
58°
22
72°
59°
23
71°
59°
24
71°
58°
25
72°
59°
26
74°
58°
27
75°
59°
28
76°
60°
29
76°
60°
30
75°
59°
31
76°
60°
1
72°
60°
2
71°
58°
3
72°
55°
4
72°
57°
5
74°
58°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Gimignano
San Gimignano's May 2026 forecast shows daily high temperatures ranging from 62° to 76°, with overnight lows between 39° and 60°. The average high for May is 71° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in San Gimignano. See also: June | July | August.