S
M
T
W
T
F
S
26
84°
63°
27
84°
60°
28
84°
60°
29
86°
61°
30
85°
65°
31
83°
60°
1
84°
65°
2
87°
66°
3
88°
60°
4
83°
59°
5
84°
60°
6
83°
60°
7
83°
62°
8
81°
59°
9
82°
62°
10
86°
61°
11
82°
61°
12
83°
65°
13
86°
65°
14
82°
64°
15
85°
64°
16
88°
58°
17
82°
58°
18
81°
59°
19
80°
61°
20
80°
57°
21
81°
57°
22
80°
60°
23
83°
61°
24
86°
62°
25
87°
61°
26
86°
56°
27
84°
55°
28
78°
54°
29
78°
55°
30
79°
56°
31
82°
61°
1
84°
61°
2
85°
60°
3
84°
57°
4
83°
61°
5
83°
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 78° to 88°, with overnight lows between 54° and 66°. The average high for August is 83° with an average low of 60°. 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.
