S
M
T
W
T
F
S
29
70°
59°
30
75°
59°
31
75°
61°
1
77°
63°
2
77°
64°
3
77°
70°
4
79°
66°
5
79°
66°
6
72°
59°
7
66°
63°
8
68°
61°
9
68°
61°
10
75°
61°
11
79°
57°
12
77°
57°
13
77°
61°
14
79°
63°
15
79°
63°
16
82°
64°
17
86°
64°
18
82°
66°
19
86°
63°
20
72°
54°
21
79°
56°
22
77°
60°
23
81°
63°
24
79°
63°
25
80°
63°
26
83°
65°
27
80°
66°
28
83°
66°
29
85°
65°
30
85°
67°
1
81°
66°
2
80°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Simons
St. Simons's April 2026 forecast shows daily high temperatures ranging from 77° to 85°, with overnight lows between 56° and 67°. The average high for April is 81° with an average low of 64°. 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 St. Simons. See also: May | June | July.