S
M
T
W
T
F
S
28
82°
50°
29
82°
51°
30
78°
50°
1
73°
52°
2
72°
51°
3
77°
53°
4
75°
52°
5
77°
55°
6
73°
54°
7
78°
55°
8
81°
54°
9
80°
54°
10
79°
53°
11
83°
55°
12
84°
56°
13
81°
55°
14
78°
54°
15
77°
54°
16
76°
55°
17
76°
53°
18
77°
53°
19
76°
54°
20
76°
54°
21
76°
55°
22
77°
55°
23
78°
56°
24
76°
54°
25
77°
54°
26
76°
53°
27
76°
54°
28
77°
55°
29
77°
54°
30
76°
54°
31
77°
55°
1
79°
54°
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 72° to 84°, with overnight lows between 50° and 56°. The average high for July is 77° with an average low of 54°. 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.
