S
M
T
W
T
F
S
28
82°
50°
29
82°
51°
30
82°
50°
1
74°
51°
2
74°
52°
3
77°
53°
4
75°
52°
5
73°
52°
6
73°
54°
7
78°
55°
8
81°
54°
9
80°
54°
10
79°
56°
11
79°
55°
12
82°
56°
13
83°
55°
14
81°
54°
15
77°
54°
16
76°
55°
17
82°
55°
18
77°
56°
19
78°
56°
20
78°
55°
21
77°
55°
22
77°
56°
23
76°
55°
24
76°
55°
25
77°
54°
26
76°
54°
27
77°
55°
28
77°
57°
29
80°
56°
30
83°
57°
31
83°
58°
1
82°
57°
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 73° to 83°, with overnight lows between 51° and 58°. The average high for July is 78° with an average low of 55°. 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.
