Rain is annoying , and night is dark and pointless , it will be better if you just set it to be day at all times , at lest remove rain , i play at sky-block oasis
If you want to make a suggestion about this make one at https://suggestions.manacube.com
I think overall rain has a purpose as it makes fishing go by faster. In general the night cylce/day cycle also have a purpose for mob spawners or wanting to show off a building in a specific light.
Geshultz
You also have the option of using a client-side mod to freeze time/weather, as it provides no unfair advantage (doesn't make anything go faster or more efficiently, doesn't change PvP, anyone can download)