S
M
T
W
T
F
S
31
72°
64°
1
86°
66°
2
73°
61°
3
81°
50°
4
86°
52°
5
90°
57°
6
90°
63°
7
90°
66°
8
91°
68°
9
90°
72°
10
90°
72°
11
95°
72°
12
99°
73°
13
99°
77°
14
97°
73°
15
91°
73°
16
79°
72°
17
90°
70°
18
93°
72°
19
90°
72°
20
88°
65°
21
93°
72°
22
91°
73°
23
91°
68°
24
88°
72°
25
89°
71°
26
91°
71°
27
95°
72°
28
100°
75°
29
98°
72°
30
91°
70°
1
92°
71°
2
90°
69°
3
91°
75°
4
91°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Fairfax
Fairfax's June 2026 forecast shows daily high temperatures ranging from 88° to 100°, with overnight lows between 65° and 75°. The average high for June is 92° 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 June weather will actually feel in Fairfax. See also: July | August | September.