S
M
T
W
T
F
S
28
76°
58°
29
75°
58°
30
73°
59°
1
74°
58°
2
76°
60°
3
76°
61°
4
75°
64°
5
80°
64°
6
81°
65°
7
81°
64°
8
80°
65°
9
81°
66°
10
82°
67°
11
83°
66°
12
82°
63°
13
81°
60°
14
77°
61°
15
76°
62°
16
75°
63°
17
77°
63°
18
77°
66°
19
Hist. Avg.
82°
65°
20
Hist. Avg.
82°
65°
21
Hist. Avg.
82°
65°
22
Hist. Avg.
83°
65°
23
Hist. Avg.
83°
65°
24
Hist. Avg.
83°
65°
25
Hist. Avg.
83°
65°
26
Hist. Avg.
83°
65°
27
Hist. Avg.
83°
65°
28
Hist. Avg.
83°
65°
29
Hist. Avg.
83°
65°
30
Hist. Avg.
83°
65°
31
Hist. Avg.
83°
65°
1
Hist. Avg.
83°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Fairfax
Fairfax's July 2026 forecast shows daily high temperatures ranging from 73° to 83°, with overnight lows between 58° and 67°. The average high for July is 78° with an average low of 63°. 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.
