S
M
T
W
T
F
S
28
87°
68°
29
92°
71°
30
93°
70°
1
95°
69°
2
99°
70°
3
N/A
4
90°
70°
5
84°
70°
6
83°
66°
7
86°
67°
8
86°
66°
9
85°
68°
10
86°
67°
11
81°
69°
12
86°
66°
13
82°
65°
14
82°
64°
15
84°
66°
16
84°
68°
17
85°
66°
18
80°
63°
19
84°
69°
20
86°
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 90°, with overnight lows between 63° and 70°. The average high for July is 84° 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.
