S
M
T
W
T
F
S
29
80°
53°
30
82°
58°
31
81°
67°
1
82°
72°
2
83°
73°
3
82°
73°
4
83°
59°
5
70°
56°
6
73°
49°
7
75°
58°
8
76°
63°
9
77°
67°
10
78°
68°
11
78°
69°
12
78°
68°
13
80°
67°
14
78°
64°
15
82°
66°
16
80°
64°
17
76°
59°
18
78°
64°
19
80°
63°
20
80°
65°
21
81°
64°
22
80°
64°
23
81°
63°
24
81°
66°
25
82°
65°
26
81°
66°
27
82°
66°
28
82°
65°
29
81°
66°
30
82°
66°
1
81°
65°
2
79°
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 70° to 83°, with overnight lows between 49° and 69°. The average high for April is 79° 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.
