S
M
T
W
T
F
S
28
69°
63°
29
72°
65°
30
90°
65°
1
94°
74°
2
91°
69°
3
92°
67°
4
79°
66°
5
70°
63°
6
70°
65°
7
71°
66°
8
84°
67°
9
86°
66°
10
76°
66°
11
74°
70°
12
74°
67°
13
88°
67°
14
96°
73°
15
81°
74°
16
86°
67°
17
79°
69°
18
82°
61°
19
76°
62°
20
79°
67°
21
77°
61°
22
78°
59°
23
77°
61°
24
78°
60°
25
79°
62°
26
78°
63°
27
77°
64°
28
80°
63°
29
79°
59°
30
76°
61°
31
76°
63°
1
77°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Oakville
Oakville's July 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 59° and 69°. The average high for July is 78° with an average low of 63°. 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 Oakville. See also: August | September | October.