S
M
T
W
T
F
S
31
83°
56°
1
81°
57°
2
80°
58°
3
83°
56°
4
82°
57°
5
82°
58°
6
78°
57°
7
79°
59°
8
80°
59°
9
81°
57°
10
88°
62°
11
90°
62°
12
93°
63°
13
88°
64°
14
86°
62°
15
88°
63°
16
85°
60°
17
82°
57°
18
76°
58°
19
75°
58°
20
78°
54°
21
78°
55°
22
84°
57°
23
83°
59°
24
85°
61°
25
83°
58°
26
81°
58°
27
77°
60°
28
72°
60°
29
74°
59°
30
72°
60°
1
74°
59°
2
81°
58°
3
87°
57°
4
88°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Ontario
Ontario's June 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for June is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Ontario. See also: July | August | September.
