S
M
T
W
T
F
S
29
68°
37°
30
75°
45°
31
75°
55°
1
84°
59°
2
81°
61°
3
82°
61°
4
82°
59°
5
72°
57°
6
63°
48°
7
72°
43°
8
64°
45°
9
70°
37°
10
77°
45°
11
86°
48°
12
86°
59°
13
81°
57°
14
86°
59°
15
88°
59°
16
88°
61°
17
88°
61°
18
90°
59°
19
70°
44°
20
76°
48°
21
71°
50°
22
83°
55°
23
84°
57°
24
86°
61°
25
85°
63°
26
78°
61°
27
81°
60°
28
79°
60°
29
75°
56°
30
77°
53°
1
77°
54°
2
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Summerville
Summerville's April 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 44° and 63°. The average high for April is 78° 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 April weather will actually feel in Summerville. See also: May | June | July.