S
M
T
W
T
F
S
26
86°
67°
27
87°
67°
28
86°
66°
29
84°
66°
30
84°
61°
31
79°
60°
1
79°
60°
2
80°
61°
3
80°
65°
4
81°
62°
5
81°
61°
6
84°
66°
7
85°
66°
8
83°
65°
9
83°
66°
10
81°
60°
11
82°
59°
12
81°
60°
13
82°
65°
14
86°
66°
15
85°
63°
16
85°
67°
17
87°
66°
18
86°
62°
19
83°
58°
20
78°
57°
21
77°
57°
22
78°
58°
23
78°
57°
24
79°
57°
25
79°
58°
26
81°
56°
27
82°
57°
28
78°
57°
29
78°
58°
30
76°
56°
31
79°
59°
1
82°
54°
2
77°
55°
3
75°
54°
4
76°
55°
5
77°
61°
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 87°, with overnight lows between 54° and 67°. The average high for August is 81° with an average low of 61°. 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.
