S
M
T
W
T
F
S
28
95°
76°
29
94°
76°
30
94°
74°
1
95°
72°
2
95°
72°
3
92°
72°
4
98°
73°
5
95°
70°
6
97°
71°
7
88°
71°
8
95°
76°
9
98°
75°
10
97°
76°
11
93°
76°
12
90°
73°
13
92°
75°
14
92°
76°
15
95°
75°
16
94°
73°
17
98°
74°
18
96°
76°
19
97°
75°
20
95°
73°
21
98°
77°
22
97°
76°
23
98°
77°
24
98°
77°
25
97°
76°
26
98°
76°
27
97°
75°
28
97°
76°
29
96°
76°
30
97°
75°
31
97°
77°
1
96°
76°
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 88° to 98°, with overnight lows between 71° and 77°. The average high for July is 96° with an average low of 75°. 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.
