S
M
T
W
T
F
S
28
83°
45°
29
75°
41°
30
74°
39°
1
75°
51°
2
83°
48°
3
77°
41°
4
75°
42°
5
77°
48°
6
83°
53°
7
91°
52°
8
88°
54°
9
91°
53°
10
91°
53°
11
90°
54°
12
93°
53°
13
91°
43°
14
79°
45°
15
82°
52°
16
92°
50°
17
90°
52°
18
92°
55°
19
Hist. Avg.
90°
50°
20
Hist. Avg.
90°
50°
21
Hist. Avg.
90°
50°
22
Hist. Avg.
90°
50°
23
Hist. Avg.
90°
50°
24
Hist. Avg.
90°
50°
25
Hist. Avg.
90°
50°
26
Hist. Avg.
91°
50°
27
Hist. Avg.
91°
50°
28
Hist. Avg.
91°
50°
29
Hist. Avg.
91°
50°
30
Hist. Avg.
91°
50°
31
Hist. Avg.
91°
50°
1
Hist. Avg.
91°
50°
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 74° to 93°, with overnight lows between 39° and 55°. The average high for July is 84° with an average low of 49°. 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.
