S
M
T
W
T
F
S
28
93°
74°
29
95°
75°
30
95°
76°
1
93°
75°
2
92°
76°
3
94°
75°
4
95°
76°
5
96°
74°
6
96°
75°
7
98°
75°
8
98°
76°
9
94°
74°
10
96°
76°
11
97°
76°
12
96°
75°
13
93°
75°
14
93°
74°
15
95°
76°
16
96°
76°
17
96°
76°
18
95°
76°
19
97°
77°
20
97°
77°
21
98°
76°
22
97°
76°
23
98°
77°
24
98°
77°
25
97°
76°
26
98°
77°
27
98°
78°
28
99°
78°
29
99°
77°
30
98°
78°
31
99°
77°
1
99°
78°
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 92° to 99°, with overnight lows between 74° 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.
