S
M
T
W
T
F
S
28
94°
72°
29
95°
73°
30
97°
74°
1
96°
71°
2
98°
72°
3
97°
72°
4
94°
70°
5
86°
69°
6
86°
70°
7
87°
70°
8
87°
70°
9
91°
69°
10
87°
71°
11
85°
71°
12
86°
70°
13
86°
68°
14
90°
71°
15
91°
71°
16
87°
72°
17
85°
70°
18
90°
72°
19
90°
68°
20
93°
71°
21
89°
63°
22
84°
63°
23
83°
64°
24
85°
64°
25
87°
64°
26
89°
68°
27
89°
67°
28
90°
75°
29
84°
67°
30
82°
70°
31
90°
71°
1
88°
70°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mount Vernon
Mount Vernon's July 2026 forecast shows daily high temperatures ranging from 82° to 93°, with overnight lows between 63° and 75°. The average high for July is 88° 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 July weather will actually feel in Mount Vernon. See also: August | September | October.
