In Michif the normal way of expressing rain is with a verb kimiwan, where the ending -n is a 3rd person inflectional intransitive inanimate ending.
One can also use the French noun for 'rain', which requires the presence of a copula.
Source: Fleury 2007
Source: Laverdure and Allard 1983: 21
Source: Laverdure and Allard 1983: 250