S
M
T
W
T
F
S
29
61°
42°
30
80°
56°
31
73°
36°
1
44°
36°
2
70°
41°
3
61°
42°
4
52°
34°
5
55°
36°
6
54°
29°
7
44°
36°
8
72°
52°
9
66°
47°
10
60°
38°
11
65°
54°
12
78°
61°
13
77°
60°
14
68°
41°
15
54°
36°
16
61°
43°
17
66°
48°
18
66°
47°
19
65°
49°
20
63°
41°
21
67°
49°
22
66°
48°
23
69°
46°
24
69°
42°
25
62°
47°
26
58°
47°
27
62°
45°
28
70°
45°
29
60°
41°
30
63°
45°
1
67°
47°
2
61°
42°
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 44° to 78°, with overnight lows between 36° and 61°. The average high for April is 65° 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 Ottawa. See also: May | June | July.
