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
64°
41°
10
74°
57°
11
70°
46°
12
72°
61°
13
84°
63°
14
88°
67°
15
93°
70°
16
94°
67°
17
91°
57°
18
76°
52°
19
73°
54°
20
75°
55°
21
72°
53°
22
71°
48°
23
66°
47°
24
65°
53°
25
73°
52°
26
69°
50°
27
65°
46°
28
64°
47°
29
65°
45°
30
64°
46°
1
66°
54°
2
75°
54°
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 64° to 94°, with overnight lows between 41° and 70°. The average high for April is 74° 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 Saint Charles. See also: May | June | July.
