S
M
T
W
T
F
S
31
75°
51°
1
69°
51°
2
75°
46°
3
83°
46°
4
87°
54°
5
80°
67°
6
89°
67°
7
85°
65°
8
81°
66°
9
89°
71°
10
90°
65°
11
82°
65°
12
81°
60°
13
82°
60°
14
72°
57°
15
76°
52°
16
76°
56°
17
69°
52°
18
73°
58°
19
76°
56°
20
77°
59°
21
70°
56°
22
68°
57°
23
71°
54°
24
77°
61°
25
81°
62°
26
73°
64°
27
80°
65°
28
88°
71°
29
93°
73°
30
96°
74°
1
92°
73°
2
91°
71°
3
89°
70°
4
87°
69°
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 73° to 96°, with overnight lows between 61° and 74°. The average high for June is 86° with an average low of 68°. 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.
