S
M
T
W
T
F
S
29
49°
23°
30
61°
29°
31
41°
33°
1
38°
28°
2
42°
26°
3
69°
36°
4
39°
31°
5
50°
32°
6
40°
24°
7
31°
18°
8
44°
15°
9
65°
28°
10
47°
35°
11
47°
30°
12
47°
24°
13
64°
41°
14
48°
39°
15
50°
40°
16
63°
44°
17
69°
43°
18
77°
42°
19
46°
31°
20
39°
23°
21
48°
21°
22
63°
36°
23
62°
35°
24
58°
28°
25
56°
37°
26
65°
41°
27
69°
43°
28
69°
51°
29
59°
47°
30
54°
38°
1
49°
36°
2
50°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Ottawa
Ottawa's April 2026 forecast shows daily high temperatures ranging from 49° to 69°, with overnight lows between 35° and 51°. The average high for April is 59° with an average low of 41°. 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 Ottawa. See also: May | June | July.
