S
M
T
W
T
F
S
26
81°
68°
27
72°
64°
28
77°
66°
29
81°
68°
30
88°
72°
1
83°
64°
2
69°
55°
3
71°
55°
4
76°
62°
5
79°
69°
6
86°
69°
7
85°
62°
8
77°
58°
9
78°
63°
10
79°
66°
11
82°
68°
12
83°
67°
13
85°
68°
14
84°
66°
15
84°
70°
16
83°
70°
17
84°
69°
18
83°
70°
19
83°
70°
20
85°
71°
21
85°
71°
22
84°
70°
23
86°
71°
24
86°
71°
25
85°
72°
26
84°
72°
27
85°
71°
28
84°
72°
29
82°
72°
30
83°
71°
31
82°
72°
1
83°
72°
2
82°
73°
3
83°
73°
4
84°
72°
5
87°
72°
6
82°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in St. Simons
St. Simons's May 2026 forecast shows daily high temperatures ranging from 69° to 87°, with overnight lows between 55° and 73°. The average high for May is 82° with an average low of 68°. 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 St. Simons. See also: June | July | August.
