S
M
T
W
T
F
S
28
85°
67°
29
89°
66°
30
90°
72°
1
93°
73°
2
94°
74°
3
94°
71°
4
90°
69°
5
87°
68°
6
86°
64°
7
82°
63°
8
83°
64°
9
85°
65°
10
86°
63°
11
84°
63°
12
83°
62°
13
85°
65°
14
83°
62°
15
84°
59°
16
77°
56°
17
77°
56°
18
80°
58°
19
84°
62°
20
84°
62°
21
78°
61°
22
80°
62°
23
83°
62°
24
83°
61°
25
84°
62°
26
84°
63°
27
85°
63°
28
85°
64°
29
84°
64°
30
85°
63°
31
82°
62°
1
77°
61°
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 77° to 94°, with overnight lows between 56° and 74°. The average high for July is 84° with an average low of 63°. 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.
