S
M
T
W
T
F
S
31
81°
64°
1
81°
62°
2
82°
57°
3
83°
53°
4
83°
57°
5
84°
60°
6
87°
67°
7
88°
71°
8
86°
71°
9
90°
71°
10
90°
74°
11
90°
75°
12
84°
64°
13
85°
62°
14
81°
57°
15
78°
54°
16
80°
58°
17
86°
61°
18
84°
62°
19
83°
60°
20
85°
62°
21
85°
63°
22
79°
61°
23
81°
58°
24
82°
55°
25
87°
62°
26
80°
68°
27
86°
72°
28
91°
72°
29
91°
74°
30
91°
73°
1
92°
70°
2
94°
74°
3
94°
69°
4
93°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mount Vernon
Mount Vernon's June 2026 forecast shows daily high temperatures ranging from 93° to 93°, with overnight lows between 70° and 70°. The average high for June is 93° with an average low of 70°. 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 Mount Vernon. See also: July | August | September.