S
M
T
W
T
F
S
29
53°
38°
30
58°
34°
31
57°
43°
1
54°
40°
2
56°
35°
3
62°
32°
4
73°
35°
5
77°
46°
6
77°
43°
7
61°
39°
8
68°
36°
9
75°
38°
10
71°
50°
11
64°
47°
12
59°
48°
13
56°
44°
14
52°
43°
15
57°
38°
16
61°
39°
17
60°
44°
18
59°
44°
19
57°
45°
20
59°
42°
21
59°
43°
22
64°
43°
23
63°
42°
24
58°
40°
25
57°
40°
26
59°
39°
27
60°
42°
28
60°
39°
29
59°
42°
30
59°
45°
1
60°
43°
2
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Louis
Saint Louis's April 2026 forecast shows daily high temperatures ranging from 52° to 71°, with overnight lows between 38° and 50°. 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 Saint Louis. See also: May | June | July.
