S
M
T
W
T
F
S
31
93°
72°
1
93°
70°
2
94°
70°
3
89°
70°
4
83°
70°
5
86°
71°
6
88°
73°
7
89°
72°
8
92°
74°
9
92°
74°
10
92°
74°
11
93°
77°
12
82°
71°
13
92°
71°
14
85°
69°
15
79°
73°
16
87°
71°
17
91°
70°
18
93°
71°
19
82°
70°
20
89°
72°
21
89°
73°
22
N/A
23
91°
74°
24
90°
73°
25
91°
73°
26
93°
76°
27
94°
77°
28
96°
76°
29
95°
78°
30
98°
76°
1
95°
76°
2
96°
77°
3
97°
75°
4
96°
76°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
June Weather in Mount Vernon
Mount Vernon's June 2026 forecast shows daily high temperatures ranging from 90° to 98°, with overnight lows between 73° and 78°. The average high for June is 94° with an average low of 76°. 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.