S
M
T
W
T
F
S
31
78°
49°
1
77°
54°
2
80°
47°
3
86°
57°
4
91°
54°
5
92°
59°
6
89°
63°
7
88°
65°
8
78°
57°
9
80°
51°
10
88°
68°
11
95°
71°
12
97°
70°
13
89°
68°
14
90°
67°
15
79°
61°
16
78°
54°
17
82°
62°
18
89°
67°
19
82°
62°
20
82°
61°
21
80°
62°
22
76°
64°
23
80°
63°
24
82°
64°
25
84°
66°
26
86°
67°
27
84°
68°
28
85°
69°
29
86°
68°
30
85°
67°
1
81°
64°
2
82°
65°
3
82°
70°
4
85°
68°
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 76° to 89°, with overnight lows between 61° and 70°. The average high for June is 83° with an average low of 66°. 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.
