S
M
T
W
T
F
S
29
63°
28°
30
70°
50°
31
82°
57°
1
86°
63°
2
64°
46°
3
82°
46°
4
88°
61°
5
73°
48°
6
61°
43°
7
55°
37°
8
55°
32°
9
63°
36°
10
79°
53°
11
71°
44°
12
76°
62°
13
85°
58°
14
88°
63°
15
94°
64°
16
89°
62°
17
84°
54°
18
75°
48°
19
70°
46°
20
66°
48°
21
70°
53°
22
75°
59°
23
80°
43°
24
64°
50°
25
72°
49°
26
68°
47°
27
63°
42°
28
62°
44°
29
64°
42°
30
63°
43°
1
65°
52°
2
73°
51°
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 62° to 94°, with overnight lows between 42° and 64°. The average high for April is 74° with an average low of 51°. 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.
