S
M
T
W
T
F
S
31
87°
65°
1
88°
64°
2
88°
64°
3
87°
64°
4
88°
65°
5
87°
64°
6
88°
66°
7
89°
66°
8
90°
61°
9
85°
62°
10
85°
66°
11
90°
67°
12
91°
68°
13
92°
64°
14
90°
63°
15
91°
63°
16
90°
64°
17
91°
65°
18
89°
65°
19
87°
66°
20
88°
68°
21
92°
67°
22
92°
68°
23
91°
67°
24
87°
68°
25
88°
66°
26
90°
68°
27
92°
69°
28
93°
69°
29
93°
68°
30
91°
68°
1
88°
69°
2
88°
67°
3
89°
68°
4
89°
68°
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 85° to 93°, with overnight lows between 61° and 69°. The average high for June is 89° with an average low of 66°. 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.