S
M
T
W
T
F
S
26
81°
60°
27
81°
61°
28
82°
62°
29
83°
64°
30
84°
67°
31
86°
67°
1
88°
66°
2
88°
67°
3
86°
67°
4
87°
63°
5
83°
59°
6
81°
59°
7
79°
60°
8
80°
60°
9
80°
61°
10
81°
61°
11
83°
62°
12
86°
63°
13
87°
65°
14
88°
66°
15
88°
66°
16
87°
65°
17
84°
60°
18
81°
58°
19
81°
60°
20
82°
64°
21
80°
65°
22
81°
59°
23
81°
65°
24
85°
66°
25
84°
65°
26
88°
64°
27
82°
66°
28
86°
66°
29
87°
65°
30
86°
66°
31
84°
62°
1
83°
63°
2
84°
62°
3
83°
60°
4
84°
63°
5
84°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fairmount
Fairmount's August 2026 forecast shows daily high temperatures ranging from 79° to 88°, with overnight lows between 58° and 67°. The average high for August is 84° with an average low of 63°. 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 Fairmount. See also: September | October | November.