S
M
T
W
T
F
S
26
81°
60°
27
80°
58°
28
75°
61°
29
78°
57°
30
73°
50°
1
63°
48°
2
66°
42°
3
65°
40°
4
70°
47°
5
76°
51°
6
77°
52°
7
77°
54°
8
71°
50°
9
73°
49°
10
74°
50°
11
76°
53°
12
80°
56°
13
81°
57°
14
81°
57°
15
73°
51°
16
72°
50°
17
73°
50°
18
74°
51°
19
76°
54°
20
78°
56°
21
80°
57°
22
82°
58°
23
82°
60°
24
83°
61°
25
84°
61°
26
83°
60°
27
80°
59°
28
78°
60°
29
78°
59°
30
79°
62°
31
81°
61°
1
81°
63°
2
80°
63°
3
80°
62°
4
81°
63°
5
81°
63°
6
80°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Summerville
Summerville's May 2026 forecast shows daily high temperatures ranging from 63° to 84°, with overnight lows between 40° and 64°. The average high for May is 77° with an average low of 56°. 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 Summerville. See also: June | July | August.
