S
M
T
W
T
F
S
31
62°
46°
1
63°
43°
2
64°
42°
3
68°
49°
4
64°
46°
5
67°
51°
6
73°
52°
7
72°
53°
8
70°
53°
9
70°
52°
10
73°
52°
11
70°
48°
12
69°
50°
13
72°
46°
14
66°
49°
15
77°
56°
16
78°
56°
17
77°
57°
18
79°
47°
19
80°
46°
20
71°
44°
21
71°
54°
22
74°
49°
23
70°
45°
24
70°
51°
25
75°
52°
26
77°
50°
27
78°
49°
28
75°
48°
29
76°
50°
30
78°
49°
1
75°
53°
2
78°
55°
3
72°
49°
4
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Gravenhurst
Gravenhurst's June 2026 forecast shows daily high temperatures ranging from 62° to 80°, with overnight lows between 42° and 57°. The average high for June is 72° with an average low of 50°. 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 Gravenhurst. See also: July | August | September.