S
M
T
W
T
F
S
28
92°
80°
29
93°
79°
30
93°
78°
1
92°
76°
2
94°
76°
3
94°
76°
4
98°
70°
5
87°
70°
6
91°
70°
7
92°
73°
8
95°
74°
9
96°
76°
10
96°
74°
11
96°
73°
12
94°
70°
13
97°
71°
14
98°
71°
15
100°
72°
16
101°
72°
17
94°
71°
18
99°
76°
19
99°
77°
20
99°
77°
21
100°
77°
22
99°
76°
23
98°
76°
24
98°
75°
25
97°
74°
26
98°
75°
27
98°
76°
28
99°
76°
29
98°
75°
30
99°
76°
31
99°
76°
1
98°
75°
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 101°, with overnight lows between 70° and 77°. The average high for July is 97° with an average low of 74°. 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.
