S
M
T
W
T
F
S
28
76°
69°
29
88°
68°
30
89°
68°
1
101°
75°
2
101°
78°
3
100°
76°
4
94°
74°
5
97°
71°
6
91°
69°
7
87°
67°
8
86°
66°
9
86°
66°
10
86°
67°
11
87°
69°
12
84°
68°
13
85°
67°
14
79°
63°
15
78°
64°
16
79°
64°
17
80°
65°
18
80°
65°
19
81°
70°
20
82°
70°
21
82°
69°
22
86°
70°
23
82°
70°
24
81°
69°
25
85°
70°
26
86°
71°
27
86°
70°
28
85°
69°
29
83°
70°
30
84°
66°
31
79°
64°
1
79°
64°
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 78° to 101°, with overnight lows between 63° and 78°. The average high for July is 86° with an average low of 69°. 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.
