S
M
T
W
T
F
S
31
73°
45°
1
67°
42°
2
74°
44°
3
77°
48°
4
81°
51°
5
83°
55°
6
71°
59°
7
70°
54°
8
81°
51°
9
84°
55°
10
76°
67°
11
82°
66°
12
73°
63°
13
81°
60°
14
64°
48°
15
66°
44°
16
72°
53°
17
72°
56°
18
64°
55°
19
66°
53°
20
71°
48°
21
72°
52°
22
72°
51°
23
70°
51°
24
72°
55°
25
70°
53°
26
70°
52°
27
72°
52°
28
74°
56°
29
76°
58°
30
78°
61°
1
77°
59°
2
75°
56°
3
78°
66°
4
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Alliston
Alliston's June 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 48° and 66°. The average high for June is 73° with an average low of 55°. 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 Alliston. See also: July | August | September.
