S
M
T
W
T
F
S
31
68°
42°
1
68°
45°
2
74°
43°
3
77°
45°
4
79°
53°
5
82°
61°
6
72°
54°
7
75°
52°
8
79°
62°
9
75°
66°
10
77°
68°
11
81°
67°
12
72°
57°
13
69°
50°
14
62°
44°
15
66°
49°
16
67°
50°
17
68°
49°
18
73°
53°
19
72°
53°
20
71°
50°
21
68°
54°
22
70°
54°
23
70°
54°
24
73°
53°
25
74°
52°
26
70°
54°
27
77°
54°
28
72°
53°
29
70°
53°
30
72°
55°
1
77°
52°
2
71°
50°
3
71°
53°
4
72°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Harriston
Harriston's June 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 44° and 68°. The average high for June is 72° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Harriston. See also: July | August | September.
