Overall most trends are not statistically significant and the few percentage of significant increases and decreases can be explained largely by chance. The follow charts compare the trends for all Environment and Climate Change Canada's Canadian stations using the v2.30 data and the newest v3.00 data release in winter 2019.
|Maximum rainfall trends in Canada. Environment and Climate Change Canada's Engineering Climate Datasets.|
|Maximum rainfall trends in Canada - Direction and Statistical Significance. Environment and Climate Change Canada's Engineering Climate Datasets v2.30 and v3.00 Comparison.|
Nationally, there are more significant increases than decreases. Some regions, however have trends that go against these averages. In southern Ontario, there are a few more decreases than increases, but twice as many statistically significant decreases than increases: