S
M
T
W
T
F
S
31
78°
52°
1
82°
60°
2
74°
51°
3
81°
47°
4
86°
50°
5
90°
54°
6
90°
61°
7
92°
63°
8
90°
65°
9
81°
70°
10
85°
72°
11
93°
71°
12
96°
71°
13
88°
66°
14
87°
65°
15
85°
64°
16
84°
63°
17
81°
62°
18
83°
63°
19
86°
64°
20
88°
63°
21
85°
61°
22
85°
64°
23
84°
65°
24
86°
64°
25
86°
64°
26
87°
65°
27
87°
65°
28
86°
64°
29
87°
65°
30
86°
65°
1
86°
66°
2
87°
66°
3
88°
65°
4
87°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Markham
Markham's June 2026 forecast shows daily high temperatures ranging from 81° to 96°, with overnight lows between 61° and 72°. The average high for June is 86° 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 June weather will actually feel in Markham. See also: July | August | September.
