S
M
T
W
T
F
S
1
68°
52°
2
61°
52°
3
60°
50°
4
60°
53°
5
60°
40°
6
63°
42°
7
74°
46°
8
71°
45°
9
64°
52°
10
62°
47°
11
73°
39°
12
64°
41°
13
62°
43°
14
61°
48°
15
64°
44°
16
68°
45°
17
75°
45°
18
66°
46°
19
72°
45°
20
74°
49°
21
69°
47°
22
64°
42°
23
65°
45°
24
68°
41°
25
66°
40°
26
73°
41°
27
77°
45°
28
67°
42°
29
73°
43°
30
64°
48°
31
61°
55°
1
64°
56°
2
59°
45°
3
72°
39°
4
77°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Half Moon Bay
Half Moon Bay'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 Half Moon Bay. See also: April | May | June.