S
M
T
W
T
F
S
28
87°
68°
29
92°
71°
30
93°
70°
1
95°
69°
2
99°
70°
3
97°
70°
4
90°
69°
5
90°
70°
6
N/A
7
82°
68°
8
84°
66°
9
85°
68°
10
83°
70°
11
81°
68°
12
80°
66°
13
84°
66°
14
88°
67°
15
89°
67°
16
84°
68°
17
83°
67°
18
82°
65°
19
82°
66°
20
83°
67°
21
82°
64°
22
83°
64°
23
85°
66°
24
86°
68°
25
80°
67°
26
80°
67°
27
81°
68°
28
83°
68°
29
83°
67°
30
85°
69°
31
85°
68°
1
82°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Mount Vernon
Mount Vernon's July 2026 forecast shows daily high temperatures ranging from 80° to 89°, with overnight lows between 64° and 70°. The average high for July is 83° with an average low of 67°. 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.
