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
80°
64°
16
83°
59°
17
83°
60°
18
66°
43°
19
63°
44°
20
69°
53°
21
72°
56°
22
75°
60°
23
76°
58°
24
73°
50°
25
68°
50°
26
68°
52°
27
71°
51°
28
66°
48°
29
69°
52°
30
66°
49°
1
69°
56°
2
67°
59°
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 63° to 90°, with overnight lows between 43° and 69°. The average high for April is 72° with an average low of 54°. 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.
