S
M
T
W
T
F
S
29
61°
36°
30
78°
43°
31
71°
38°
1
46°
38°
2
72°
37°
3
63°
41°
4
62°
40°
5
45°
36°
6
47°
32°
7
36°
24°
8
65°
32°
9
67°
50°
10
53°
32°
11
59°
28°
12
80°
51°
13
76°
60°
14
82°
55°
15
71°
58°
16
70°
48°
17
80°
45°
18
61°
40°
19
49°
30°
20
51°
26°
21
71°
44°
22
66°
42°
23
80°
42°
24
73°
43°
25
52°
42°
26
67°
50°
27
73°
52°
28
60°
44°
29
54°
39°
30
54°
38°
1
54°
39°
2
51°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Joseph
St. Joseph's April 2026 forecast shows daily high temperatures ranging from 51° to 73°, with overnight lows between 38° and 52°. The average high for April is 60° with an average low of 43°. 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. Joseph. See also: May | June | July.