S
M
T
W
T
F
S
28
81°
57°
29
82°
59°
30
N/A
1
91°
73°
2
95°
73°
3
95°
68°
4
89°
64°
5
82°
64°
6
82°
62°
7
84°
64°
8
86°
66°
9
86°
66°
10
81°
66°
11
82°
65°
12
83°
63°
13
84°
60°
14
74°
57°
15
75°
58°
16
76°
59°
17
76°
61°
18
78°
63°
19
79°
64°
20
83°
65°
21
84°
65°
22
84°
64°
23
83°
65°
24
84°
64°
25
84°
65°
26
85°
66°
27
86°
66°
28
85°
65°
29
84°
64°
30
83°
62°
31
76°
58°
1
75°
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 74° to 95°, with overnight lows between 57° and 73°. The average high for July is 83° with an average low of 64°. 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.
