Average data for 10 years
1 June
Saturday
+24°
+17°
2 June
Sunday
+25°
+18°
3 June
Monday
+25°
+18°
4 June
Tuesday
+25°
+19°
5 June
Wednesday
+25°
+18°
6 June
Thursday
+25°
+19°
7 June
Friday
+26°
+19°
8 June
Saturday
+27°
+18°
9 June
Sunday
+23°
+17°
10 June
Monday
+22°
+17°
11 June
Tuesday
+24°
+17°
12 June
Wednesday
+23°
+17°
13 June
Thursday
+25°
+18°
14 June
Friday
+24°
+18°
15 June
Saturday
+23°
+16°
16 June
Sunday
+25°
+19°
17 June
Monday
+26°
+19°
18 June
Tuesday
+24°
+18°
19 June
Wednesday
+25°
+19°
20 June
Thursday
+26°
+19°
21 June
Friday
+28°
+20°
22 June
Saturday
+29°
+22°
23 June
Sunday
+28°
+22°
24 June
Monday
+27°
+21°
25 June
Tuesday
+29°
+22°
26 June
Wednesday
+30°
+23°
27 June
Thursday
+33°
+24°
28 June
Friday
+32°
+24°
29 June
Saturday
+32°
+25°
30 June
Sunday
+34°
+26°
In June, the weather in Ontario is typically warm. Average daily high temperature in June is about 26 degrees above zero. On average, Ontario has 17 sunny, 11 partly cloudy, and 2 rainy days in June. The rains are usually light. June as well as May and September is considered the most comfortable time to visit Ontario.