S
M
T
W
T
F
S
28
93°
75°
29
94°
73°
30
96°
74°
1
94°
74°
2
95°
74°
3
92°
74°
4
94°
72°
5
94°
73°
6
92°
73°
7
94°
74°
8
94°
74°
9
93°
74°
10
94°
75°
11
92°
75°
12
90°
73°
13
82°
74°
14
86°
72°
15
91°
72°
16
94°
70°
17
96°
75°
18
96°
74°
19
95°
73°
20
96°
72°
21
93°
75°
22
87°
76°
23
92°
72°
24
95°
72°
25
98°
74°
26
97°
71°
27
96°
74°
28
97°
74°
29
96°
75°
30
94°
74°
31
94°
73°
1
91°
72°
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 87° to 98°, with overnight lows between 71° and 76°. The average high for July is 94° with an average low of 73°. 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.
