S
M
T
W
T
F
S
29
64°
29°
30
74°
50°
31
81°
56°
1
86°
61°
2
85°
62°
3
82°
57°
4
84°
61°
5
72°
52°
6
64°
40°
7
65°
42°
8
59°
35°
9
66°
31°
10
78°
38°
11
82°
47°
12
79°
51°
13
83°
62°
14
87°
61°
15
92°
56°
16
89°
60°
17
85°
60°
18
89°
53°
19
72°
41°
20
65°
35°
21
66°
32°
22
81°
47°
23
85°
49°
24
87°
53°
25
87°
59°
26
62°
51°
27
69°
42°
28
N/A
29
72°
52°
30
73°
46°
1
68°
47°
2
56°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Ontario
Ontario's April 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 40° and 52°. The average high for April is 67° with an average low of 46°. 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 Ontario. See also: May | June | July.
