Когда мы приехали, там шёл дождь и

Когда мы приехали, там шёл дождь и нам сказали, что дожди уже идут целый месяц

Результаты (английский) 1:

When we arrived, there was rain, and we were told that the rains have come the whole month

Результаты (английский) 2:

When we arrived, it was raining and we were told that it was already raining for a month.

Результаты (английский) 3:

When we came, there was rain. Someone told us that it had been raining for a month.