S
M
T
W
T
F
S
31
N/A
1
69°
51°
2
75°
56°
3
81°
56°
4
82°
63°
5
77°
62°
6
75°
58°
7
76°
59°
8
73°
58°
9
75°
60°
10
75°
60°
11
76°
59°
12
73°
58°
13
74°
53°
14
73°
49°
15
67°
49°
16
67°
50°
17
68°
50°
18
70°
54°
19
73°
58°
20
74°
57°
21
74°
59°
22
76°
59°
23
72°
58°
24
73°
52°
25
70°
53°
26
71°
58°
27
74°
60°
28
72°
57°
29
72°
56°
30
73°
57°
1
72°
57°
2
73°
61°
3
78°
61°
4
75°
55°
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 67° to 82°, with overnight lows between 49° and 63°. The average high for June is 73° with an average low of 57°. 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.
