S
M
T
W
T
F
S
26
86°
71°
27
87°
65°
28
86°
64°
29
87°
68°
30
88°
66°
31
88°
69°
1
91°
69°
2
91°
66°
3
87°
65°
4
85°
63°
5
86°
64°
6
86°
64°
7
87°
65°
8
86°
64°
9
87°
68°
10
91°
66°
11
89°
69°
12
89°
70°
13
91°
70°
14
92°
69°
15
93°
63°
16
90°
63°
17
86°
64°
18
88°
67°
19
91°
62°
20
85°
62°
21
84°
63°
22
85°
62°
23
88°
65°
24
92°
66°
25
91°
67°
26
91°
65°
27
88°
61°
28
84°
61°
29
85°
66°
30
90°
66°
31
89°
65°
1
90°
65°
2
89°
64°
3
88°
65°
4
88°
65°
5
85°
63°
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 84° to 93°, with overnight lows between 61° and 71°. The average high for August is 88° 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.
