S
M
T
W
T
F
S
26
82°
60°
27
78°
51°
28
77°
46°
29
86°
59°
30
84°
60°
1
70°
55°
2
63°
51°
3
78°
44°
4
86°
45°
5
86°
49°
6
90°
56°
7
83°
64°
8
79°
54°
9
79°
58°
10
92°
60°
11
89°
58°
12
74°
49°
13
84°
59°
14
79°
50°
15
81°
53°
16
90°
62°
17
93°
67°
18
94°
66°
19
93°
65°
20
92°
64°
21
89°
67°
22
86°
66°
23
91°
66°
24
90°
64°
25
88°
74°
26
86°
65°
27
87°
67°
28
88°
67°
29
88°
68°
30
84°
68°
31
82°
67°
1
88°
68°
2
88°
69°
3
86°
68°
4
84°
68°
5
86°
69°
6
85°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Jackson
Fort Jackson's May 2026 forecast shows daily high temperatures ranging from 74° to 94°, with overnight lows between 49° and 74°. The average high for May is 87° 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 Fort Jackson. See also: June | July | August.
