S
M
T
W
T
F
S
29
52°
31°
30
64°
36°
31
57°
34°
1
34°
28°
2
40°
28°
3
64°
35°
4
44°
32°
5
45°
29°
6
38°
19°
7
29°
17°
8
43°
34°
9
60°
39°
10
48°
30°
11
48°
31°
12
61°
55°
13
65°
44°
14
50°
36°
15
47°
29°
16
43°
29°
17
48°
38°
18
54°
39°
19
55°
31°
20
58°
37°
21
56°
39°
22
53°
39°
23
58°
41°
24
56°
33°
25
48°
30°
26
49°
34°
27
50°
32°
28
55°
37°
29
52°
34°
30
51°
36°
1
52°
35°
2
52°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Alliston
Alliston's April 2026 forecast shows daily high temperatures ranging from 29° to 65°, with overnight lows between 17° and 55°. The average high for April is 51° with an average low of 34°. 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 Alliston. See also: May | June | July.
