S
M
T
W
T
F
S
26
84°
64°
27
86°
73°
28
84°
68°
29
70°
61°
30
68°
55°
1
68°
54°
2
75°
46°
3
82°
45°
4
78°
56°
5
79°
62°
6
76°
53°
7
71°
49°
8
78°
49°
9
84°
61°
10
83°
63°
11
78°
53°
12
83°
47°
13
87°
51°
14
85°
60°
15
93°
61°
16
89°
69°
17
88°
66°
18
89°
73°
19
88°
69°
20
79°
67°
21
76°
66°
22
76°
67°
23
80°
66°
24
77°
65°
25
80°
65°
26
84°
66°
27
83°
66°
28
82°
65°
29
84°
64°
30
85°
63°
31
84°
62°
1
87°
66°
2
86°
65°
3
84°
65°
4
81°
60°
5
82°
62°
6
87°
67°
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 76° to 89°, with overnight lows between 60° and 73°. The average high for May is 83° with an average low of 65°. 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.
