S
M
T
W
T
F
S
28
86°
63°
29
88°
67°
30
90°
64°
1
87°
67°
2
89°
69°
3
85°
66°
4
83°
66°
5
84°
67°
6
77°
63°
7
78°
64°
8
80°
65°
9
79°
68°
10
80°
67°
11
81°
68°
12
85°
70°
13
86°
70°
14
83°
69°
15
83°
69°
16
81°
68°
17
82°
66°
18
81°
67°
19
82°
69°
20
84°
70°
21
86°
69°
22
86°
70°
23
81°
68°
24
81°
70°
25
82°
68°
26
85°
70°
27
86°
71°
28
85°
70°
29
83°
70°
30
83°
69°
31
86°
71°
1
86°
70°
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 77° to 90°, with overnight lows between 63° and 71°. The average high for July is 84° with an average low of 68°. 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.
