S
M
T
W
T
F
S
28
76°
65°
29
84°
64°
30
89°
65°
1
96°
71°
2
100°
77°
3
100°
78°
4
93°
73°
5
88°
71°
6
81°
65°
7
78°
61°
8
79°
63°
9
83°
65°
10
84°
64°
11
85°
64°
12
85°
63°
13
86°
64°
14
87°
65°
15
86°
63°
16
79°
60°
17
81°
61°
18
83°
63°
19
86°
67°
20
85°
66°
21
80°
66°
22
81°
65°
23
85°
67°
24
84°
66°
25
84°
66°
26
86°
67°
27
87°
67°
28
87°
66°
29
86°
66°
30
87°
67°
31
88°
67°
1
85°
66°
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 78° to 100°, with overnight lows between 60° and 78°. The average high for July is 85° 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.