S
M
T
W
T
F
S
1
42°
29°
2
33°
21°
3
38°
29°
4
47°
37°
5
44°
39°
6
41°
37°
7
51°
36°
8
71°
47°
9
72°
35°
10
80°
41°
11
77°
51°
12
62°
33°
13
46°
26°
14
53°
29°
15
49°
34°
16
66°
40°
17
40°
28°
18
37°
23°
19
47°
29°
20
68°
31°
21
58°
43°
22
71°
42°
23
53°
33°
24
48°
28°
25
56°
32°
26
75°
45°
27
65°
37°
28
44°
29°
29
56°
23°
30
70°
41°
31
79°
59°
1
80°
54°
2
54°
40°
3
67°
40°
4
74°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Fieldsboro
Fieldsboro's March 2026 forecast shows daily high temperatures ranging from 74° to 74°, with overnight lows between 48° and 48°. The average high for March is 74° with an average low of 48°. 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 Fieldsboro. See also: April | May | June.