S
M
T
W
T
F
S
29
73°
43°
30
85°
63°
31
80°
65°
1
70°
48°
2
78°
57°
3
83°
61°
4
76°
43°
5
59°
39°
6
63°
43°
7
56°
42°
8
78°
56°
9
82°
59°
10
66°
53°
11
75°
60°
12
82°
63°
13
81°
68°
14
80°
52°
15
65°
49°
16
67°
52°
17
72°
54°
18
75°
57°
19
76°
58°
20
78°
62°
21
70°
49°
22
65°
45°
23
68°
57°
24
74°
56°
25
74°
52°
26
66°
49°
27
67°
51°
28
72°
56°
29
74°
59°
30
73°
58°
1
76°
57°
2
67°
53°
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 65° to 82°, with overnight lows between 45° and 68°. The average high for April is 73° with an average low of 55°. 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.
