S
M
T
W
T
F
S
1
18°
-17°
2
36°
7°
3
19°
7°
4
19°
10°
5
19°
10°
6
21°
12°
7
43°
10°
8
48°
30°
9
36°
12°
10
28°
10°
11
25°
12°
12
32°
16°
13
18°
7°
14
14°
0°
15
7°
-13°
16
10°
-13°
17
19°
-11°
18
48°
18°
19
46°
27°
20
43°
34°
21
36°
30°
22
36°
27°
23
45°
23°
24
41°
23°
25
32°
19°
26
21°
12°
27
27°
12°
28
43°
25°
29
45°
27°
30
30°
25°
31
28°
19°
1
36°
16°
2
36°
30°
3
43°
28°
4
45°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in St. Thomas
St. Thomas's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in St. Thomas. See also: April | May | June.
