S
M
T
W
T
F
S
29
75°
65°
30
82°
63°
31
84°
61°
1
83°
62°
2
84°
66°
3
84°
65°
4
85°
63°
5
86°
64°
6
82°
63°
7
71°
62°
8
76°
62°
9
75°
64°
10
78°
62°
11
79°
63°
12
80°
62°
13
82°
62°
14
81°
63°
15
82°
61°
16
80°
63°
17
84°
65°
18
83°
65°
19
79°
64°
20
79°
65°
21
80°
65°
22
79°
64°
23
79°
65°
24
80°
65°
25
81°
64°
26
83°
66°
27
85°
66°
28
84°
65°
29
85°
65°
30
86°
66°
1
85°
66°
2
86°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Markham
Markham's April 2026 forecast shows daily high temperatures ranging from 71° to 86°, with overnight lows between 61° and 66°. The average high for April is 81° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Markham. See also: May | June | July.
