S
M
T
W
T
F
S
29
75°
45°
30
74°
53°
31
71°
49°
1
63°
43°
2
55°
31°
3
50°
26°
4
60°
32°
5
69°
41°
6
72°
43°
7
71°
44°
8
68°
43°
9
61°
42°
10
60°
39°
11
57°
38°
12
58°
37°
13
59°
38°
14
63°
41°
15
64°
43°
16
61°
35°
17
66°
40°
18
66°
41°
19
65°
40°
20
66°
38°
21
59°
32°
22
57°
31°
23
55°
30°
24
55°
31°
25
57°
32°
26
67°
38°
27
62°
36°
28
58°
32°
29
63°
33°
30
69°
38°
1
70°
40°
2
71°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint John
Saint John's April 2026 forecast shows daily high temperatures ranging from 50° to 72°, with overnight lows between 26° and 44°. The average high for April is 63° with an average low of 37°. 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 Saint John. See also: May | June | July.
