S
M
T
W
T
F
S
28
76°
69°
29
88°
68°
30
89°
68°
1
97°
73°
2
98°
75°
3
98°
78°
4
99°
74°
5
94°
72°
6
88°
73°
7
82°
73°
8
82°
71°
9
87°
72°
10
86°
68°
11
88°
70°
12
83°
68°
13
82°
64°
14
91°
68°
15
98°
75°
16
96°
72°
17
88°
71°
18
87°
70°
19
84°
69°
20
83°
65°
21
80°
64°
22
82°
68°
23
84°
68°
24
81°
67°
25
85°
68°
26
83°
69°
27
81°
68°
28
83°
70°
29
85°
65°
30
80°
69°
31
80°
70°
1
81°
67°
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 80° to 98°, with overnight lows between 64° and 75°. The average high for July is 85° 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.
