S
M
T
W
T
F
S
29
72°
39°
30
79°
45°
31
83°
58°
1
86°
55°
2
85°
54°
3
85°
58°
4
86°
60°
5
78°
59°
6
69°
47°
7
75°
50°
8
69°
44°
9
74°
47°
10
77°
48°
11
83°
53°
12
85°
54°
13
82°
56°
14
86°
58°
15
85°
60°
16
82°
58°
17
84°
59°
18
84°
61°
19
85°
62°
20
83°
51°
21
80°
57°
22
81°
58°
23
81°
58°
24
80°
57°
25
81°
57°
26
81°
58°
27
82°
58°
28
80°
57°
29
80°
57°
30
76°
56°
1
75°
58°
2
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Clair
Saint Clair's April 2026 forecast shows daily high temperatures ranging from 69° to 86°, with overnight lows between 44° and 62°. The average high for April is 80° with an average low of 56°. 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 Clair. See also: May | June | July.