S
M
T
W
T
F
S
28
84°
62°
29
85°
61°
30
86°
65°
1
87°
64°
2
87°
65°
3
93°
68°
4
89°
64°
5
86°
62°
6
80°
61°
7
81°
66°
8
85°
67°
9
86°
68°
10
90°
68°
11
87°
67°
12
82°
63°
13
82°
67°
14
86°
65°
15
86°
67°
16
87°
68°
17
88°
68°
18
90°
69°
19
91°
68°
20
86°
65°
21
85°
64°
22
88°
68°
23
91°
69°
24
91°
69°
25
83°
68°
26
84°
68°
27
84°
67°
28
85°
68°
29
90°
69°
30
91°
68°
31
82°
63°
1
84°
67°
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 80° to 93°, with overnight lows between 61° and 69°. The average high for July is 86° with an average low of 66°. 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.
