S
M
T
W
T
F
S
29
78°
67°
30
80°
67°
31
79°
69°
1
81°
63°
2
77°
69°
3
80°
66°
4
81°
65°
5
82°
65°
6
82°
68°
7
81°
68°
8
78°
68°
9
78°
71°
10
75°
72°
11
81°
71°
12
80°
70°
13
79°
68°
14
83°
73°
15
82°
73°
16
85°
72°
17
85°
73°
18
83°
73°
19
86°
73°
20
83°
72°
21
84°
72°
22
87°
70°
23
86°
72°
24
84°
71°
25
84°
72°
26
86°
72°
27
86°
69°
28
85°
71°
29
83°
72°
30
84°
73°
1
84°
71°
2
85°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Louis Heights
Saint Louis Heights's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April is ° with an average low of °. 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 Heights. See also: May | June | July.