are the stations that collect data proprietary? And do different people have different information? Or do they use different type of analysis to come up with a degree or two of difference/different ideas about precipitation.
Edited to add an example:
I use the Wewow app and it lets you choose from different weather services and shows forecasts for each of them. For 11 PM tonight here’s a sample is what’s forecasted (c = degrees celsius, pop= probability of precipitation).
World weather online 10c 75pop
AccuWeather 12c and 48pop
Aerisb13c and 0pop
Thanks!
Editing again to say I’m in Ontario, Canada
In: 3
The simple answer is that weather is really complicated and the data is extremely noisy, devices that are a few meters apart can measure slightly different results and lead to different predictions. Even if they were all the same the predictions aren’t an exact science (they’re very good but obviously not perfect) so a little change in measurement can lead to a bigger change in prediction. That said they keep getting better and noise reduction is constantly improving so the predictions are never too far off
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