S
M
T
W
T
F
S
29
48°
30°
30
50°
27°
31
55°
28°
1
55°
41°
2
55°
43°
3
59°
46°
4
68°
45°
5
73°
36°
6
75°
41°
7
64°
39°
8
68°
34°
9
72°
34°
10
77°
34°
11
66°
50°
12
66°
48°
13
61°
50°
14
50°
39°
15
48°
36°
16
59°
33°
17
56°
35°
18
64°
42°
19
69°
44°
20
74°
44°
21
78°
53°
22
65°
49°
23
62°
36°
24
69°
42°
25
73°
46°
26
72°
46°
27
72°
47°
28
74°
47°
29
69°
44°
30
56°
37°
1
55°
37°
2
56°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Boston Bar 1A
Boston Bar 1A's April 2026 forecast shows daily high temperatures ranging from 55° to 78°, with overnight lows between 33° and 53°. The average high for April is 66° with an average low of 42°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Boston Bar 1A. See also: May | June | July.