S
M
T
W
T
F
S
31
88°
74°
1
87°
74°
2
89°
74°
3
85°
72°
4
84°
73°
5
87°
75°
6
88°
77°
7
84°
78°
8
86°
75°
9
88°
76°
10
87°
76°
11
89°
74°
12
88°
73°
13
89°
72°
14
90°
73°
15
89°
74°
16
87°
72°
17
88°
73°
18
87°
76°
19
88°
75°
20
89°
74°
21
87°
74°
22
87°
74°
23
88°
74°
24
87°
74°
25
87°
75°
26
88°
74°
27
87°
74°
28
88°
75°
29
87°
75°
30
87°
74°
1
88°
74°
2
89°
75°
3
90°
74°
4
90°
74°
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 84° to 90°, with overnight lows between 72° and 78°. The average high for June is 88° with an average low of 74°. 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.
