S
M
T
W
T
F
S
28
80°
61°
29
81°
62°
30
78°
61°
1
83°
62°
2
82°
60°
3
75°
56°
4
77°
63°
5
78°
64°
6
85°
66°
7
84°
65°
8
77°
62°
9
78°
66°
10
86°
66°
11
84°
64°
12
85°
65°
13
82°
65°
14
85°
66°
15
85°
65°
16
80°
60°
17
77°
60°
18
78°
62°
19
79°
58°
20
76°
57°
21
77°
58°
22
83°
65°
23
86°
66°
24
86°
66°
25
84°
61°
26
78°
57°
27
83°
61°
28
84°
61°
29
86°
59°
30
78°
56°
31
84°
57°
1
80°
56°
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 75° to 86°, with overnight lows between 56° and 66°. The average high for July is 81° with an average low of 62°. 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.
