S
M
T
W
T
F
S
31
94°
75°
1
93°
73°
2
84°
65°
3
85°
68°
4
88°
70°
5
88°
72°
6
80°
71°
7
83°
69°
8
94°
76°
9
92°
76°
10
94°
79°
11
91°
73°
12
88°
65°
13
93°
67°
14
80°
65°
15
83°
64°
16
90°
63°
17
96°
74°
18
80°
61°
19
83°
64°
20
86°
67°
21
87°
66°
22
79°
63°
23
80°
70°
24
81°
70°
25
84°
70°
26
90°
76°
27
92°
77°
28
94°
78°
29
96°
79°
30
97°
78°
1
97°
72°
2
97°
73°
3
97°
74°
4
99°
74°
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 79° to 99°, with overnight lows between 63° and 79°. The average high for June is 91° with an average low of 73°. 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.