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