S
M
T
W
T
F
S
26
82°
67°
27
85°
70°
28
85°
71°
29
80°
70°
30
86°
67°
31
81°
64°
1
80°
64°
2
80°
66°
3
81°
68°
4
85°
71°
5
86°
70°
6
86°
69°
7
83°
68°
8
85°
69°
9
86°
69°
10
84°
62°
11
81°
61°
12
82°
64°
13
80°
63°
14
82°
63°
15
80°
65°
16
79°
67°
17
78°
66°
18
79°
63°
19
79°
62°
20
80°
62°
21
79°
64°
22
80°
68°
23
80°
67°
24
84°
67°
25
84°
60°
26
83°
60°
27
77°
61°
28
77°
61°
29
76°
64°
30
77°
65°
31
76°
66°
1
82°
61°
2
76°
61°
3
77°
60°
4
76°
59°
5
75°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Fairfield
Fairfield's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 59° and 71°. The average high for August is 81° 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 Fairfield. See also: September | October | November.
