S
M
T
W
T
F
S
28
92°
73°
29
94°
71°
30
99°
71°
1
97°
71°
2
94°
70°
3
95°
71°
4
95°
69°
5
94°
70°
6
92°
71°
7
91°
68°
8
84°
65°
9
86°
68°
10
93°
71°
11
94°
71°
12
93°
70°
13
88°
71°
14
88°
69°
15
89°
71°
16
91°
71°
17
93°
72°
18
93°
72°
19
94°
71°
20
94°
72°
21
93°
71°
22
93°
72°
23
94°
73°
24
95°
73°
25
94°
72°
26
96°
73°
27
96°
73°
28
95°
72°
29
96°
74°
30
97°
74°
31
97°
73°
1
96°
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 84° to 99°, with overnight lows between 65° and 74°. The average high for July is 93° with an average low of 71°. 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.
