This mod adds rainbows to your world that have a chance to appear after a rain or a thunderstorm ends that last for 5 minutes. As well as moonbows that can appear during the night as long as it is a full moon alongside a few surprises if you are playing with it in the month of June :3
Future plans:
Directional rain and snow. (Rain and snow fall between 0-45 degree angle from any direction the angle can change overtime)
Lunar Eclipses.
Water ripples when rain touches water.
Light pillars in snowy biomes during sunset.
A way to make mini rainbows using waterfalls.
Auroras that last for a week every minecraft month.