It (to be) cold and rainy last Sunday правильная форма глагола

It was cold and rainy last Sunday. Было холодно и дождливо в прошедшее воскресенье.

The sentence is in Past Indefinite. Past Indefinite is used for an action in the past. Verbs in English are divided into two groups. They are regular and irregular. Regular verbs form their Past Indefinite with the help of the suffix ed. (To wash washed). Irregular verbs take their second form for Past Indefinite. Was is the past form of the auxiliary verb to be. To be has two forms for Past Indefinite. They are was and were. Was is used for singular and were is used for plural.