S
M
T
W
T
F
S
28
76°
69°
29
88°
68°
30
89°
68°
1
97°
73°
2
98°
75°
3
98°
78°
4
99°
74°
5
94°
72°
6
88°
73°
7
82°
73°
8
83°
72°
9
86°
71°
10
90°
71°
11
85°
68°
12
83°
66°
13
82°
64°
14
86°
65°
15
90°
69°
16
87°
67°
17
86°
66°
18
85°
68°
19
84°
66°
20
83°
68°
21
80°
67°
22
79°
65°
23
80°
65°
24
87°
70°
25
85°
68°
26
83°
69°
27
86°
71°
28
86°
71°
29
85°
70°
30
85°
70°
31
83°
69°
1
80°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Fairfax
Fairfax's July 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 64° and 72°. The average high for July is 84° with an average low of 68°. 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 Fairfax. See also: August | September | October.
