Is The Weather Network accurate?
Canada's dominant weather brand, on TV, web and mobile.
The Weather Network does not run its own forecast — it blends public models like the Env. Canada. In our last-30-day test that model scored 75/100 (about ±NaN°C off), but the app never shows you when the models disagree.
How The Weather Network makes its forecast. The Weather Network runs a proprietary blend and draws on the public models, including Environment Canada's GEM. Many Canadians question its accuracy; because the blend is closed, its exact numbers cannot be checked. That matters, because it means the accuracy you get from The Weather Network is really the accuracy of the models underneath it — the same models we test, in the open, against the recorded weather.
Our verdict. What we can verify is the open GEM model it and everyone else in Canada builds on. See how GEM scored against the weather that actually happened in the Canadian test above.
Which forecast is most accurate in Canada?
CheckWeather Score — graded against the weather that actually happened
The CheckWeather Score blends temperature, wind and rain accuracy — each measured against ERA5 (the recorded weather) over the last 30 days across 300 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.