S
M
T
W
T
F
S
29
22°
11°
30
34°
11°
31
41°
25°
1
27°
22°
2
25°
16°
3
29°
12°
4
26°
18°
5
28°
16°
6
47°
27°
7
36°
21°
8
33°
19°
9
40°
21°
10
47°
25°
11
49°
24°
12
37°
29°
13
41°
28°
14
40°
30°
15
35°
29°
16
45°
26°
17
47°
26°
18
38°
25°
19
54°
24°
20
68°
38°
21
N/A
22
37°
28°
23
35°
28°
24
37°
30°
25
35°
32°
26
36°
28°
27
37°
27°
28
38°
28°
29
41°
30°
30
44°
34°
1
43°
33°
2
44°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in St. John's
St. John's's April 2026 forecast shows daily high temperatures ranging from 35° to 44°, with overnight lows between 27° and 34°. The average high for April is 39° with an average low of 30°. 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's. See also: May | June | July.