S
M
T
W
T
F
S
29
50°
26°
30
63°
38°
31
66°
35°
1
36°
28°
2
49°
29°
3
64°
33°
4
50°
33°
5
42°
29°
6
39°
23°
7
26°
15°
8
47°
20°
9
63°
35°
10
41°
33°
11
47°
29°
12
56°
54°
13
63°
52°
14
66°
56°
15
64°
58°
16
65°
45°
17
64°
50°
18
66°
38°
19
45°
29°
20
43°
31°
21
51°
39°
22
60°
46°
23
58°
42°
24
56°
39°
25
55°
44°
26
49°
31°
27
49°
30°
28
51°
30°
29
54°
31°
30
51°
29°
1
53°
29°
2
51°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Harriston
Harriston's April 2026 forecast shows daily high temperatures ranging from 43° to 66°, with overnight lows between 29° and 58°. The average high for April is 56° with an average low of 40°. 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 Harriston. See also: May | June | July.
