S
M
T
W
T
F
S
26
88°
59°
27
92°
59°
28
93°
58°
29
93°
60°
30
92°
61°
31
94°
61°
1
94°
62°
2
93°
62°
3
93°
61°
4
94°
61°
5
91°
60°
6
92°
61°
7
92°
61°
8
86°
59°
9
89°
59°
10
90°
58°
11
87°
58°
12
86°
57°
13
Hist. Avg.
89°
58°
14
Hist. Avg.
89°
58°
15
Hist. Avg.
89°
58°
16
Hist. Avg.
89°
58°
17
Hist. Avg.
89°
58°
18
Hist. Avg.
89°
58°
19
Hist. Avg.
89°
58°
20
Hist. Avg.
89°
58°
21
Hist. Avg.
89°
58°
22
Hist. Avg.
89°
58°
23
Hist. Avg.
89°
58°
24
Hist. Avg.
89°
58°
25
Hist. Avg.
89°
58°
26
Hist. Avg.
89°
58°
27
Hist. Avg.
89°
58°
28
Hist. Avg.
89°
58°
29
Hist. Avg.
89°
58°
30
Hist. Avg.
89°
58°
31
Hist. Avg.
89°
58°
1
Hist. Avg.
89°
58°
2
Hist. Avg.
89°
58°
3
Hist. Avg.
89°
58°
4
Hist. Avg.
89°
58°
5
Hist. Avg.
89°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Fairfield-Suisun City
Fairfield-Suisun City's August 2026 forecast shows daily high temperatures ranging from 86° to 94°, with overnight lows between 57° and 62°. The average high for August is 91° 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-Suisun City. See also: September | October | November.
