S
M
T
W
T
F
S
31
78°
56°
1
72°
54°
2
70°
58°
3
72°
61°
4
73°
61°
5
73°
62°
6
76°
62°
7
74°
61°
8
81°
61°
9
80°
57°
10
80°
62°
11
79°
63°
12
81°
64°
13
82°
62°
14
80°
57°
15
75°
57°
16
75°
62°
17
76°
64°
18
82°
57°
19
77°
58°
20
78°
59°
21
81°
66°
22
85°
64°
23
78°
65°
24
78°
63°
25
82°
60°
26
79°
61°
27
83°
61°
28
80°
65°
29
83°
61°
30
79°
66°
1
85°
65°
2
81°
61°
3
81°
59°
4
79°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in George Mason
George Mason's June 2026 forecast shows daily high temperatures ranging from 70° to 85°, with overnight lows between 54° and 66°. The average high for June is 79° with an average low of 61°. 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 George Mason. See also: July | August | September.