S
M
T
W
T
F
S
26
93°
71°
27
93°
69°
28
89°
70°
29
82°
63°
30
83°
64°
31
79°
63°
1
75°
68°
2
81°
68°
3
84°
64°
4
86°
62°
5
86°
60°
6
77°
66°
7
89°
69°
8
87°
69°
9
88°
66°
10
93°
73°
11
93°
74°
12
91°
72°
13
91°
72°
14
91°
75°
15
93°
76°
16
94°
73°
17
83°
65°
18
85°
61°
19
83°
67°
20
85°
70°
21
86°
65°
22
84°
64°
23
82°
58°
24
82°
56°
25
86°
60°
26
90°
67°
27
85°
65°
28
87°
63°
29
89°
58°
30
93°
63°
31
96°
68°
1
99°
69°
2
100°
72°
3
101°
72°
4
100°
72°
5
102°
72°
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 ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.