withholden ... rain ... three months to ... harvest - the time when rain was most needed, and when usually “the latter rain” fell, namely, in spring, the latter half of February, and the whole of March and April (Hos 6:3; Joe 2:23). The drought meant is that mentioned in 1Ki 17:1 [Grotius].
rain upon one city ... not ... upon another - Any rain that fell was only partial.