S
M
T
W
T
F
S
23
44°
30°
24
43°
31°
25
49°
38°
26
55°
39°
27
51°
38°
28
52°
33°
1
52°
31°
2
32°
23°
3
28°
19°
4
45°
26°
5
54°
42°
6
51°
38°
7
46°
32°
8
48°
33°
9
43°
31°
10
59°
29°
11
53°
34°
12
48°
39°
13
44°
39°
14
50°
38°
15
47°
38°
16
60°
44°
17
56°
44°
18
45°
40°
19
46°
39°
20
50°
42°
21
49°
41°
22
53°
35°
23
46°
31°
24
50°
31°
25
52°
36°
26
46°
37°
27
48°
35°
28
55°
39°
29
50°
38°
30
45°
39°
31
57°
45°
1
54°
40°
2
41°
35°
3
52°
39°
4
67°
44°
5
49°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Harwich
Harwich's March 2025 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 Harwich. See also: April | May | June.