S
M
T
W
T
F
S
26
87°
71°
27
87°
72°
28
88°
72°
29
86°
71°
30
87°
72°
31
89°
72°
1
91°
71°
2
90°
71°
3
90°
69°
4
89°
71°
5
88°
69°
6
87°
71°
7
91°
66°
8
89°
67°
9
87°
67°
10
91°
66°
11
91°
66°
12
90°
70°
13
91°
71°
14
91°
71°
15
90°
70°
16
90°
71°
17
91°
70°
18
86°
70°
19
91°
69°
20
88°
68°
21
86°
66°
22
86°
69°
23
87°
67°
24
85°
65°
25
87°
65°
26
88°
69°
27
89°
70°
28
88°
69°
29
89°
69°
30
89°
68°
31
88°
65°
1
88°
65°
2
82°
62°
3
84°
62°
4
87°
67°
5
87°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fort Mill
Fort Mill's August 2026 forecast shows daily high temperatures ranging from 82° to 91°, with overnight lows between 62° and 72°. The average high for August is 88° 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 August weather will actually feel in Fort Mill. See also: September | October | November.
