Environment Canada - Understanding Your Forecast

What causes weather? And what do the terms in Environment Canada's weather bulletins mean? This fact sheet should help you get the most out of Environment Canada's weather information.

The public weather bulletin often includes a report, a forecast and an outlook. The report describes the current weather for a specific location. The forecast predicts the coming weather for today and tomorrow. The extended forecast or outlook indicates general weather trends for up to three days beyond the forecast.