S
M
T
W
T
F
S
29
81°
74°
30
80°
69°
31
80°
68°
1
84°
68°
2
83°
72°
3
80°
72°
4
79°
69°
5
85°
76°
6
85°
77°
7
86°
80°
8
87°
80°
9
86°
79°
10
87°
79°
11
86°
79°
12
86°
79°
13
85°
72°
14
82°
74°
15
85°
77°
16
84°
76°
17
83°
76°
18
84°
76°
19
84°
75°
20
84°
76°
21
85°
75°
22
85°
74°
23
86°
74°
24
85°
75°
25
87°
75°
26
85°
75°
27
86°
76°
28
83°
78°
29
84°
77°
30
85°
77°
1
84°
78°
2
84°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St Thomas
St Thomas's April 2026 forecast shows daily high temperatures ranging from 83° to 87°, with overnight lows between 74° and 78°. The average high for April is 85° with an average low of 76°. 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 Thomas. See also: May | June | July.