S
M
T
W
T
F
S
29
61°
31°
30
72°
54°
31
85°
62°
1
88°
48°
2
64°
47°
3
84°
47°
4
86°
67°
5
74°
51°
6
62°
45°
7
58°
37°
8
52°
30°
9
62°
29°
10
75°
36°
11
71°
50°
12
70°
44°
13
82°
56°
14
89°
59°
15
90°
60°
16
93°
64°
17
84°
58°
18
83°
57°
19
65°
41°
20
57°
35°
21
60°
45°
22
76°
52°
23
76°
50°
24
74°
52°
25
70°
49°
26
67°
52°
27
65°
49°
28
65°
49°
29
64°
48°
30
65°
50°
1
65°
48°
2
66°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Charles
Saint Charles's April 2026 forecast shows daily high temperatures ranging from 57° to 93°, with overnight lows between 35° and 64°. The average high for April is 70° with an average low of 50°. 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 Charles. See also: May | June | July.
