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
82°
71°
9
84°
70°
10
89°
73°
11
85°
68°
12
85°
63°
13
85°
62°
14
86°
65°
15
94°
71°
16
90°
67°
17
86°
68°
18
83°
68°
19
86°
66°
20
85°
68°
21
86°
67°
22
87°
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 80° to 94°, with overnight lows between 62° and 73°. The average high for July is 85° 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.
