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
91°
71°
6
94°
72°
7
92°
73°
8
95°
77°
9
99°
78°
10
98°
76°
11
95°
77°
12
90°
72°
13
93°
73°
14
95°
73°
15
98°
75°
16
98°
76°
17
99°
77°
18
95°
73°
19
97°
78°
20
98°
77°
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 90° to 99°, with overnight lows between 71° and 78°. 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.
