S
M
T
W
T
F
S
26
99°
74°
27
96°
77°
28
89°
72°
29
85°
68°
30
84°
73°
31
82°
66°
1
75°
64°
2
82°
63°
3
84°
61°
4
88°
66°
5
73°
66°
6
81°
68°
7
86°
66°
8
82°
66°
9
88°
70°
10
88°
73°
11
91°
75°
12
86°
73°
13
81°
70°
14
79°
72°
15
88°
73°
16
81°
66°
17
81°
63°
18
81°
66°
19
81°
66°
20
82°
63°
21
86°
66°
22
82°
61°
23
75°
55°
24
75°
55°
25
81°
61°
26
82°
64°
27
81°
56°
28
82°
62°
29
82°
67°
30
90°
71°
31
93°
68°
1
85°
66°
2
89°
70°
3
85°
67°
4
84°
64°
5
84°
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 81° to 93°, with overnight lows between 56° and 71°. The average high for August is 86° 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.
