S
M
T
W
T
F
S
28
95°
73°
29
96°
75°
30
95°
74°
1
94°
73°
2
95°
71°
3
97°
72°
4
99°
74°
5
98°
76°
6
95°
75°
7
96°
75°
8
96°
75°
9
96°
75°
10
96°
73°
11
97°
75°
12
98°
74°
13
92°
73°
14
85°
71°
15
87°
72°
16
88°
72°
17
93°
74°
18
92°
72°
19
91°
71°
20
91°
73°
21
94°
70°
22
92°
71°
23
89°
72°
24
87°
71°
25
90°
72°
26
90°
72°
27
89°
71°
28
93°
72°
29
94°
74°
30
94°
73°
31
93°
74°
1
94°
73°
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 85° to 94°, with overnight lows between 70° and 74°. The average high for July is 91° with an average low of 72°. 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.
