S
M
T
W
T
F
S
29
64°
29°
30
69°
56°
31
79°
60°
1
68°
47°
2
81°
47°
3
76°
62°
4
83°
60°
5
65°
41°
6
56°
34°
7
43°
29°
8
63°
25°
9
75°
47°
10
76°
50°
11
59°
39°
12
80°
43°
13
79°
66°
14
77°
64°
15
83°
65°
16
82°
62°
17
75°
55°
18
82°
42°
19
53°
34°
20
49°
31°
21
68°
52°
22
70°
48°
23
73°
52°
24
79°
56°
25
68°
43°
26
60°
41°
27
62°
45°
28
56°
43°
29
55°
41°
30
56°
41°
1
59°
45°
2
59°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Clairsville
St. Clairsville's April 2026 forecast shows daily high temperatures ranging from 49° to 82°, with overnight lows between 31° and 56°. The average high for April is 63° with an average low of 44°. 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 St. Clairsville. See also: May | June | July.