S
M
T
W
T
F
S
28
76°
51°
29
75°
55°
30
77°
62°
1
82°
62°
2
79°
63°
3
80°
58°
4
76°
61°
5
82°
57°
6
79°
61°
7
83°
63°
8
81°
63°
9
79°
59°
10
77°
56°
11
77°
56°
12
78°
57°
13
81°
61°
14
82°
60°
15
81°
59°
16
78°
58°
17
81°
55°
18
77°
56°
19
76°
57°
20
74°
56°
21
76°
57°
22
78°
64°
23
Hist. Avg.
83°
63°
24
Hist. Avg.
83°
63°
25
Hist. Avg.
83°
63°
26
Hist. Avg.
83°
63°
27
Hist. Avg.
82°
63°
28
Hist. Avg.
82°
62°
29
Hist. Avg.
82°
62°
30
Hist. Avg.
82°
62°
31
Hist. Avg.
82°
62°
1
Hist. Avg.
82°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Ontario
Ontario's July 2026 forecast shows daily high temperatures ranging from 74° to 83°, with overnight lows between 51° and 64°. The average high for July is 79° with an average low of 59°. 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.
