S
M
T
W
T
F
S
28
87°
68°
29
92°
71°
30
93°
70°
1
95°
69°
2
99°
70°
3
96°
70°
4
90°
69°
5
86°
70°
6
81°
69°
7
86°
67°
8
86°
66°
9
85°
68°
10
86°
67°
11
84°
69°
12
83°
66°
13
82°
65°
14
82°
67°
15
84°
66°
16
85°
64°
17
80°
63°
18
80°
63°
19
84°
69°
20
85°
69°
21
83°
68°
22
81°
69°
23
83°
69°
24
86°
70°
25
86°
69°
26
85°
69°
27
86°
70°
28
87°
69°
29
86°
70°
30
87°
69°
31
86°
69°
1
84°
68°
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 96°, with overnight lows between 63° and 70°. The average high for July is 85° with an average low of 68°. 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.
