S
M
T
W
T
F
S
31
70°
44°
1
69°
44°
2
75°
46°
3
80°
54°
4
84°
57°
5
82°
62°
6
77°
60°
7
74°
57°
8
76°
58°
9
80°
60°
10
80°
61°
11
79°
59°
12
79°
60°
13
78°
58°
14
79°
55°
15
70°
51°
16
69°
52°
17
70°
53°
18
72°
54°
19
72°
56°
20
73°
53°
21
73°
54°
22
76°
60°
23
75°
59°
24
73°
60°
25
76°
56°
26
73°
55°
27
74°
61°
28
75°
62°
29
74°
57°
30
73°
56°
1
74°
56°
2
75°
61°
3
79°
63°
4
82°
63°
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 69° to 84°, with overnight lows between 44° and 63°. The average high for June is 76° with an average low of 57°. 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.