https://www.materialui.co/colors

rgb "#f44336" - Day temperature (Red 500)
rgb "#b71c1c" - Day max. temp. (Red 900)
rgb "#607d8b" - Night temperature (Blue-Grey 500)
rgb "#263238" - Night min. temp. (Blue-Grey 900)
rgb "#2196f3" - Rain (Blue 500)
rgb "#283593" - Rain overall (Indigo 800)

Untested:
rgb "#ba68c8" - Dewpoint (Purple 300)
rgb "#4caf50" - Wind (Green 500)