S
M
T
W
T
F
S
29
71°
37°
30
81°
38°
31
53°
33°
1
43°
33°
2
36°
32°
3
40°
33°
4
37°
28°
5
56°
27°
6
40°
20°
7
42°
36°
8
67°
35°
9
50°
29°
10
52°
34°
11
55°
41°
12
56°
42°
13
61°
39°
14
60°
38°
15
58°
37°
16
59°
38°
17
56°
33°
18
58°
41°
19
61°
39°
20
55°
40°
21
50°
38°
22
51°
39°
23
58°
35°
24
52°
31°
25
60°
42°
26
61°
42°
27
64°
43°
28
64°
39°
29
63°
43°
30
65°
44°
1
66°
42°
2
66°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Peter
St. Peter's April 2026 forecast shows daily high temperatures ranging from 37° to 67°, with overnight lows between 20° and 44°. The average high for April is 57° with an average low of 37°. 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. Peter. See also: May | June | July.