S
M
T
W
T
F
S
29
65°
53°
30
81°
58°
31
87°
57°
1
87°
60°
2
88°
60°
3
86°
62°
4
87°
66°
5
71°
50°
6
72°
49°
7
80°
53°
8
77°
53°
9
76°
55°
10
78°
56°
11
85°
57°
12
84°
58°
13
85°
59°
14
85°
60°
15
84°
59°
16
84°
60°
17
76°
50°
18
79°
57°
19
78°
56°
20
79°
57°
21
80°
58°
22
80°
58°
23
79°
57°
24
80°
58°
25
81°
57°
26
81°
58°
27
80°
58°
28
80°
56°
29
79°
57°
30
77°
58°
1
76°
57°
2
76°
58°
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 71° to 87°, with overnight lows between 49° and 66°. The average high for April is 80° with an average low of 57°. 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.