S
M
T
W
T
F
S
28
72°
60°
29
74°
59°
30
72°
60°
1
74°
59°
2
81°
58°
3
87°
57°
4
86°
63°
5
87°
62°
6
87°
61°
7
91°
64°
8
94°
66°
9
92°
61°
10
87°
62°
11
88°
63°
12
89°
62°
13
91°
65°
14
97°
66°
15
93°
66°
16
94°
67°
17
92°
64°
18
92°
64°
19
91°
66°
20
92°
66°
21
93°
67°
22
94°
67°
23
94°
66°
24
93°
68°
25
95°
67°
26
94°
67°
27
94°
66°
28
93°
66°
29
94°
67°
30
94°
67°
31
93°
66°
1
93°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Ontario
Ontario's July 2026 forecast shows daily high temperatures ranging from 86° to 97°, with overnight lows between 61° and 68°. The average high for July is 92° with an average low of 65°. 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 Ontario. See also: August | September | October.
