Average data for 10 years
1 June
Saturday
+23°
+18°
2 June
Sunday
+23°
+17°
3 June
Monday
+23°
+17°
4 June
Tuesday
+21°
+16°
5 June
Wednesday
+21°
+16°
6 June
Thursday
+23°
+18°
7 June
Friday
+23°
+18°
8 June
Saturday
+23°
+17°
9 June
Sunday
+21°
+16°
10 June
Monday
+21°
+16°
11 June
Tuesday
+21°
+16°
12 June
Wednesday
+23°
+17°
13 June
Thursday
+24°
+18°
14 June
Friday
+23°
+18°
15 June
Saturday
+24°
+18°
16 June
Sunday
+25°
+19°
17 June
Monday
+26°
+20°
18 June
Tuesday
+26°
+21°
19 June
Wednesday
+28°
+22°
20 June
Thursday
+28°
+22°
21 June
Friday
+26°
+21°
22 June
Saturday
+26°
+20°
23 June
Sunday
+25°
+20°
24 June
Monday
+26°
+20°
25 June
Tuesday
+26°
+21°
26 June
Wednesday
+28°
+21°
27 June
Thursday
+27°
+21°
28 June
Friday
+27°
+21°
29 June
Saturday
+28°
+22°
30 June
Sunday
+28°
+21°
In June, the weather in Ontario is typically warm. Average daily high temperature in June is about 25 degrees above zero. On average, Ontario has 30 sunny days in June. June as well as May and October is considered the most comfortable time to visit Ontario.