S
M
T
W
T
F
S
28
95°
76°
29
94°
76°
30
94°
74°
1
95°
72°
2
91°
73°
3
90°
75°
4
92°
74°
5
90°
72°
6
90°
72°
7
92°
73°
8
97°
75°
9
96°
76°
10
93°
74°
11
94°
76°
12
96°
75°
13
95°
74°
14
97°
76°
15
94°
73°
16
98°
76°
17
98°
77°
18
98°
77°
19
97°
78°
20
98°
78°
21
99°
77°
22
99°
78°
23
98°
78°
24
99°
77°
25
99°
78°
26
98°
78°
27
99°
77°
28
98°
78°
29
99°
77°
30
100°
78°
31
100°
78°
1
99°
77°
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 100°, with overnight lows between 72° and 78°. The average high for July is 96° with an average low of 76°. 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.
