S
M
T
W
T
F
S
28
97°
73°
29
93°
72°
30
95°
73°
1
93°
72°
2
97°
70°
3
99°
73°
4
99°
73°
5
N/A
6
95°
75°
7
95°
74°
8
98°
74°
9
97°
74°
10
99°
73°
11
96°
72°
12
94°
71°
13
91°
69°
14
93°
70°
15
92°
69°
16
93°
72°
17
92°
71°
18
91°
73°
19
94°
80°
20
93°
73°
21
92°
72°
22
91°
71°
23
91°
72°
24
86°
70°
25
86°
70°
26
87°
69°
27
87°
71°
28
88°
71°
29
86°
70°
30
86°
71°
31
89°
70°
1
89°
71°
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 86° to 99°, with overnight lows between 69° and 80°. The average high for July is 92° with an average low of 72°. 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.
