S
M
T
W
T
F
S
29
51°
29°
30
67°
40°
31
56°
40°
1
71°
40°
2
42°
37°
3
68°
38°
4
62°
38°
5
57°
40°
6
51°
38°
7
46°
35°
8
40°
29°
9
56°
35°
10
66°
49°
11
60°
37°
12
56°
46°
13
76°
60°
14
72°
53°
15
71°
49°
16
64°
51°
17
67°
49°
18
66°
44°
19
58°
44°
20
60°
48°
21
63°
47°
22
64°
42°
23
57°
40°
24
58°
45°
25
58°
44°
26
56°
43°
27
56°
44°
28
58°
42°
29
57°
41°
30
58°
41°
1
59°
48°
2
67°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Allston
Allston's April 2026 forecast shows daily high temperatures ranging from 56° to 76°, with overnight lows between 35° and 60°. The average high for April is 62° with an average low of 45°. 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 Allston. See also: May | June | July.