S
M
T
W
T
F
S
29
72°
40°
30
85°
54°
31
84°
65°
1
73°
50°
2
76°
56°
3
83°
63°
4
75°
43°
5
60°
39°
6
65°
37°
7
57°
43°
8
77°
41°
9
81°
48°
10
73°
55°
11
71°
48°
12
80°
60°
13
85°
68°
14
90°
69°
15
75°
63°
16
83°
58°
17
86°
59°
18
63°
42°
19
67°
42°
20
67°
50°
21
80°
56°
22
82°
57°
23
84°
63°
24
71°
54°
25
67°
49°
26
68°
52°
27
69°
54°
28
69°
53°
29
63°
46°
30
62°
47°
1
66°
51°
2
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Louis
St. Louis's April 2026 forecast shows daily high temperatures ranging from 62° to 84°, with overnight lows between 42° and 63°. The average high for April is 71° with an average low of 52°. 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. Louis. See also: May | June | July.
