In America, just about every meteorologist editorializes the weather to a degree. There's nothing scientific about telling me "it's a great night for baseball" (great for the fans? Pitchers? Hitters?) or "don't wash your car just yet" but I will never stop hearing those. I don't, and the public doesn't seem to think that infringes on journalistic standards, because the information is still presented. Maybe this is different than what you mean -- if you're talking about a situation where journalists intentionally created the full context and pushed the information to the side, obviously that is undesirable.

I will add that weather as a "news product" actually gains quite a fair bit from presenter opinion, and news is a product above all.