天氣 (weather)

粵：今日 天氣 唔好 因為 落 太多大 雪。
粵萍：gam1 jat6 tin1 hei3 m4 hou2 jan1 wai6 jau5 taai3 do1 syut3.
Literal: today weather not good because have too much snow.
English: The weather's not good today because there's too much snow.

We say rain much is 落大雪 :)

天氣 (weather)

粵：今日 天氣 唔好 因為 有 太多 雪。

今日落好多雪所以天氣唔好。(1)
粵萍：gam1 jat6 tin1 hei3 m4 hou2 jan1 wai6 jau5 taai3 do1 syut3.
Literal: today weather not good because have too much snow.
English: The weather's not good today because there's too much snow.

1. The reason I would change it like this is because it seems you want to emphasise on causation ("there's too much snow" SO "the weather's good"). Depending on what you want to emphasise on (including if you don't want to emphasise anything), then the word order can change.