S
M
T
W
T
F
S
29
80°
48°
30
82°
65°
31
84°
66°
1
84°
67°
2
82°
67°
3
85°
70°
4
85°
68°
5
68°
57°
6
71°
49°
7
76°
43°
8
80°
48°
9
80°
55°
10
82°
57°
11
83°
61°
12
83°
62°
13
84°
66°
14
84°
64°
15
85°
64°
16
86°
62°
17
86°
61°
18
82°
57°
19
70°
50°
20
75°
46°
21
74°
53°
22
77°
63°
23
80°
64°
24
84°
67°
25
88°
69°
26
86°
72°
27
87°
71°
28
88°
67°
29
87°
71°
30
85°
63°
1
80°
59°
2
80°
61°
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 77° to 88°, with overnight lows between 59° and 72°. The average high for April is 84° with an average low of 66°. 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.
