S
M
T
W
T
F
S
28
90°
70°
29
93°
75°
30
95°
77°
1
95°
73°
2
90°
73°
3
90°
72°
4
90°
69°
5
85°
66°
6
84°
64°
7
87°
68°
8
89°
69°
9
90°
68°
10
85°
67°
11
86°
69°
12
89°
67°
13
90°
69°
14
91°
68°
15
86°
65°
16
85°
66°
17
81°
62°
18
82°
69°
19
86°
70°
20
87°
69°
21
89°
69°
22
89°
70°
23
90°
70°
24
89°
69°
25
88°
70°
26
88°
70°
27
89°
69°
28
89°
71°
29
90°
69°
30
88°
70°
31
87°
69°
1
84°
66°
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 81° to 91°, with overnight lows between 62° and 73°. The average high for July is 88° 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 Oakville. See also: August | September | October.