S
M
T
W
T
F
S
29
46°
36°
30
46°
30°
31
50°
27°
1
45°
38°
2
46°
36°
3
52°
33°
4
61°
33°
5
66°
41°
6
70°
43°
7
60°
44°
8
64°
34°
9
67°
37°
10
72°
49°
11
64°
45°
12
62°
43°
13
55°
41°
14
58°
42°
15
52°
39°
16
53°
37°
17
58°
42°
18
59°
39°
19
55°
38°
20
57°
39°
21
59°
38°
22
56°
41°
23
53°
35°
24
52°
34°
25
52°
34°
26
54°
36°
27
54°
38°
28
55°
40°
29
55°
37°
30
56°
39°
1
56°
37°
2
61°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. John
St. John's April 2026 forecast shows daily high temperatures ranging from 52° to 72°, with overnight lows between 34° and 49°. The average high for April is 58° with an average low of 39°. 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 St. John. See also: May | June | July.
