S
M
T
W
T
F
S
28
86°
70°
29
92°
72°
30
92°
78°
1
93°
73°
2
94°
76°
3
96°
72°
4
91°
73°
5
84°
71°
6
82°
66°
7
86°
65°
8
88°
68°
9
88°
69°
10
82°
69°
11
80°
60°
12
83°
63°
13
83°
64°
14
85°
62°
15
84°
61°
16
84°
63°
17
83°
64°
18
83°
63°
19
84°
62°
20
80°
58°
21
78°
58°
22
78°
58°
23
79°
59°
24
80°
61°
25
83°
62°
26
81°
64°
27
84°
65°
28
85°
65°
29
85°
64°
30
84°
66°
31
83°
65°
1
84°
65°
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 78° to 88°, with overnight lows between 58° and 69°. The average high for July is 83° 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.