S
M
T
W
T
F
S
26
77°
55°
27
72°
52°
28
68°
48°
29
81°
57°
30
73°
59°
1
64°
55°
2
59°
50°
3
68°
43°
4
79°
46°
5
81°
54°
6
84°
59°
7
77°
59°
8
72°
50°
9
72°
55°
10
82°
59°
11
79°
59°
12
70°
52°
13
79°
46°
14
77°
54°
15
77°
45°
16
86°
54°
17
90°
66°
18
90°
66°
19
90°
63°
20
91°
64°
21
91°
64°
22
88°
64°
23
75°
63°
24
83°
69°
25
81°
69°
26
80°
68°
27
82°
69°
28
88°
69°
29
83°
67°
30
75°
65°
31
76°
62°
1
78°
63°
2
78°
61°
3
81°
65°
4
80°
64°
5
82°
66°
6
81°
65°
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 75° to 88°, with overnight lows between 61° and 69°. The average high for May is 81° with an average low of 66°. 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.
