S
M
T
W
T
F
S
28
91°
72°
29
91°
74°
30
91°
73°
1
92°
70°
2
94°
74°
3
94°
69°
4
91°
68°
5
88°
69°
6
87°
67°
7
87°
69°
8
85°
70°
9
90°
69°
10
85°
72°
11
86°
71°
12
87°
72°
13
88°
71°
14
90°
71°
15
90°
71°
16
90°
72°
17
91°
73°
18
94°
73°
19
88°
70°
20
91°
76°
21
94°
68°
22
85°
61°
23
80°
60°
24
79°
63°
25
85°
64°
26
89°
68°
27
88°
68°
28
89°
68°
29
87°
69°
30
90°
70°
31
88°
66°
1
89°
69°
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 79° to 94°, with overnight lows between 60° and 76°. The average high for July is 88° with an average low of 68°. 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.
