S
M
T
W
T
F
S
29
63°
30°
30
72°
49°
31
82°
59°
1
85°
56°
2
57°
48°
3
74°
47°
4
87°
56°
5
73°
49°
6
60°
40°
7
56°
35°
8
58°
29°
9
64°
34°
10
79°
39°
11
73°
47°
12
74°
41°
13
81°
58°
14
83°
60°
15
88°
63°
16
90°
63°
17
83°
59°
18
89°
63°
19
68°
41°
20
58°
36°
21
63°
43°
22
71°
50°
23
71°
49°
24
72°
53°
25
69°
49°
26
65°
45°
27
60°
40°
28
62°
46°
29
64°
44°
30
69°
41°
1
63°
42°
2
64°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Thomas
Saint Thomas's April 2026 forecast shows daily high temperatures ranging from 58° to 90°, with overnight lows between 36° and 63°. The average high for April is 72° with an average low of 49°. 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 Thomas. See also: May | June | July.