S
M
T
W
T
F
S
29
35°
9°
30
47°
28°
31
40°
26°
1
32°
26°
2
31°
24°
3
32°
24°
4
32°
24°
5
44°
24°
6
44°
29°
7
30°
24°
8
33°
24°
9
52°
24°
10
60°
32°
11
48°
31°
12
39°
28°
13
49°
28°
14
48°
34°
15
48°
38°
16
54°
38°
17
45°
32°
18
49°
36°
19
61°
36°
20
42°
25°
21
37°
27°
22
42°
31°
23
40°
32°
24
40°
34°
25
42°
32°
26
42°
35°
27
44°
33°
28
45°
33°
29
46°
35°
30
44°
34°
1
47°
38°
2
48°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in West St. Peters
West St. Peters's April 2026 forecast shows daily high temperatures ranging from 37° to 61°, with overnight lows between 25° and 38°. The average high for April is 45° with an average low of 33°. 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 West St. Peters. See also: May | June | July.