S
M
T
W
T
F
S
28
86°
70°
29
92°
70°
30
92°
70°
1
93°
69°
2
93°
71°
3
94°
73°
4
91°
71°
5
87°
70°
6
85°
67°
7
88°
67°
8
88°
68°
9
89°
70°
10
85°
67°
11
84°
64°
12
85°
63°
13
84°
64°
14
83°
63°
15
85°
63°
16
84°
65°
17
86°
64°
18
85°
65°
19
84°
68°
20
84°
62°
21
82°
61°
22
83°
62°
23
83°
62°
24
84°
65°
25
86°
65°
26
83°
67°
27
87°
68°
28
89°
68°
29
89°
67°
30
88°
69°
31
88°
68°
1
87°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Fairfield
Fairfield's July 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 61° and 70°. The average high for July is 86° with an average low of 66°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Fairfield. See also: August | September | October.