S
M
T
W
T
F
S
28
83°
69°
29
90°
70°
30
93°
71°
1
94°
69°
2
95°
69°
3
92°
71°
4
92°
69°
5
90°
70°
6
88°
69°
7
83°
67°
8
83°
66°
9
84°
67°
10
85°
67°
11
84°
66°
12
86°
69°
13
85°
66°
14
81°
63°
15
81°
63°
16
82°
64°
17
82°
64°
18
85°
66°
19
86°
69°
20
85°
68°
21
84°
69°
22
81°
69°
23
81°
68°
24
82°
69°
25
83°
68°
26
81°
69°
27
82°
69°
28
81°
68°
29
81°
69°
30
82°
65°
31
80°
62°
1
80°
64°
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 95°, with overnight lows between 62° and 71°. The average high for July is 85° 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.
