S
M
T
W
T
F
S
31
86°
66°
1
88°
70°
2
82°
68°
3
79°
63°
4
82°
66°
5
83°
67°
6
80°
68°
7
78°
66°
8
85°
70°
9
86°
68°
10
90°
70°
11
88°
68°
12
87°
69°
13
88°
65°
14
85°
65°
15
84°
66°
16
85°
65°
17
86°
64°
18
88°
69°
19
88°
69°
20
87°
68°
21
87°
68°
22
84°
69°
23
89°
70°
24
89°
70°
25
90°
71°
26
90°
70°
27
89°
70°
28
89°
69°
29
88°
70°
30
87°
70°
1
85°
69°
2
87°
70°
3
86°
70°
4
84°
69°
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 78° to 90°, with overnight lows between 64° and 71°. The average high for June is 86° with an average low of 68°. 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.
