S
M
T
W
T
F
S
28
92°
76°
29
93°
75°
30
94°
76°
1
91°
76°
2
88°
75°
3
90°
77°
4
91°
76°
5
90°
75°
6
90°
77°
7
90°
76°
8
91°
75°
9
90°
76°
10
90°
76°
11
90°
77°
12
91°
75°
13
90°
76°
14
94°
78°
15
91°
77°
16
90°
78°
17
92°
78°
18
91°
79°
19
91°
78°
20
90°
78°
21
91°
79°
22
91°
79°
23
92°
78°
24
92°
79°
25
91°
79°
26
92°
78°
27
91°
79°
28
92°
79°
29
92°
78°
30
91°
79°
31
90°
78°
1
87°
77°
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 94°, with overnight lows between 75° and 79°. The average high for July is 91° with an average low of 77°. 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.
