month by month

month by month

1. During the course of each consecutive month. We've steadily been growing the userbase month by month.
2. Considering a month in comparison to the one before and after it. I think you need to look at your expenses month by month to see where you can try to save some money.
See also: by, month
Farlex Dictionary of Idioms.

ˌmonth by ˈmonth

as the months pass; each month: Her pain increased month by month.
See also: by, month
Farlex Partner Idioms Dictionary
See also:
  • by the month
  • rabbit, rabbit(, rabbit)
  • for (some) months running
  • be (something) to the good
  • be to the good
  • as I see it
  • close a deal
  • close a/the deal
  • as I was saying
  • get (one's) priorities right
References in classic literature
Month by month things were stepping livelier, but to what goal?
Howards End
In meticulous detail and utilizing archival sources, Weinberg describes the waxing and waning of labor unrest and strikes month by month with their accompanying violence and the creation of a soviet of workers' deputies.
The economic situation in Odessa is described in general terms as part of the background mostly summarized in the first chapter, but shifting conditions such as unemployment or reduced trade are not recorded month by month as are the local political events and at times political events occurring in the two capitals.
The Revolution of 1905 in Odessa: Blood on the Steps