S
M
T
W
T
F
S
1
35°
6°
2
12°
2°
3
34°
4°
4
40°
28°
5
28°
-6°
6
23°
-8°
7
42°
11°
8
44°
35°
9
51°
35°
10
57°
28°
11
31°
23°
12
49°
23°
13
31°
19°
14
32°
19°
15
33°
23°
16
49°
23°
17
56°
30°
18
30°
20°
19
33°
14°
20
40°
26°
21
33°
23°
22
30°
21°
23
29°
23°
24
29°
24°
25
36°
22°
26
40°
21°
27
40°
16°
28
21°
12°
29
34°
12°
30
43°
29°
31
40°
25°
1
32°
25°
2
33°
24°
3
33°
25°
4
33°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Belfast
Belfast'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 Belfast. See also: April | May | June.
