I think this is a long forgotten issue in minecraft since the devs decided that, raining rivers in deserts was a feature apparently.

But, is it possible to disable freezing and snowing during winter in biomes that are located adjacent to one or more warm/hot climates? or disable it when the biome is located between warm biomes like a beach between a jungle and a warm ocean?
It gets kinda ugly especially when playing with custom datapacks that slap random biomes together
Or when the shoreline of a jungle is frozen over since its a beach

Frozen river during winter

Snowy plains in between jungle edge and savanna

Frozen jungle river

Frozen jungle shoreline

Its cool if you cant though i understand, if anyone has some workarounds/recommendations, it would help immensely