The temperatures in Ontario in March are usually low and can range between 10°C and 20°C.
The wather in Ontario in March can vary between cold and nice weather days. Expect a few rainy days but usually not more than 3.
Our weather forecast can give you a great sense of what weather to expect in Ontario in March 2025.
If you’re planning to visit Ontario in the near future, we highly recommend that you review the 14 day weather forecast for Ontario before you arrive.
Temperatures
20° / 10°
Rainy Days
2
Snowy Days
0
Dry Days
29
Rainfall
36
mm
Sun Hours
11.3
Hrs
