S
M
T
W
T
F
S
28
97°
73°
29
97°
75°
30
95°
73°
1
95°
72°
2
97°
68°
3
97°
70°
4
99°
70°
5
100°
75°
6
97°
75°
7
96°
74°
8
99°
75°
9
100°
75°
10
98°
74°
11
99°
71°
12
95°
72°
13
89°
69°
14
91°
68°
15
97°
69°
16
97°
70°
17
96°
72°
18
93°
71°
19
94°
71°
20
95°
70°
21
94°
72°
22
93°
72°
23
92°
71°
24
88°
71°
25
87°
70°
26
88°
71°
27
88°
72°
28
89°
72°
29
87°
71°
30
87°
72°
31
88°
71°
1
90°
72°
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 87° to 100°, with overnight lows between 68° and 75°. The average high for July is 93° with an average low of 71°. 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.
