S
M
T
W
T
F
S
26
81°
68°
27
82°
64°
28
81°
63°
29
82°
65°
30
84°
64°
31
80°
66°
1
82°
68°
2
81°
68°
3
84°
67°
4
81°
64°
5
82°
67°
6
82°
66°
7
81°
64°
8
83°
64°
9
84°
67°
10
84°
67°
11
82°
66°
12
81°
68°
13
81°
67°
14
80°
68°
15
81°
68°
16
82°
66°
17
86°
68°
18
86°
68°
19
83°
66°
20
80°
62°
21
80°
63°
22
83°
66°
23
85°
64°
24
80°
65°
25
82°
63°
26
80°
66°
27
85°
67°
28
84°
64°
29
82°
61°
30
78°
62°
31
79°
62°
1
80°
63°
2
81°
66°
3
83°
64°
4
80°
64°
5
78°
65°
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 78° to 86°, with overnight lows between 61° and 68°. The average high for August is 82° 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 August weather will actually feel in Fairmount. See also: September | October | November.