S
M
T
W
T
F
S
29
64°
38°
30
79°
54°
31
79°
41°
1
46°
41°
2
72°
40°
3
74°
55°
4
69°
40°
5
53°
37°
6
54°
38°
7
46°
31°
8
70°
39°
9
78°
56°
10
64°
43°
11
64°
38°
12
79°
54°
13
81°
63°
14
82°
68°
15
75°
63°
16
75°
57°
17
81°
54°
18
60°
38°
19
55°
35°
20
57°
31°
21
76°
44°
22
79°
57°
23
N/A
24
74°
49°
25
75°
47°
26
76°
57°
27
74°
52°
28
69°
47°
29
66°
44°
30
64°
43°
1
59°
38°
2
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in St. Joseph
St. Joseph's April 2026 forecast shows daily high temperatures ranging from 59° to 76°, with overnight lows between 38° and 57°. The average high for April is 68° with an average low of 46°. 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.