"untypical for" is a correct phrase and can be used in written English.
It means not characteristic or typical of something. Example: The warm weather in December is untypical for this region.
That seems unnecessarily risky but not untypical for Wenger.
The size of the claim is not untypical for civil suits in the United States.
Botero is also rather untypical for a Colombian as most his compatriots are climbers.
The work, which, untypical for sacred works of the time, is written in the composer's vernacular German, calls for a small complement of soloists, chorus and continuo instruments.
Many attributed these qualities, as well as his immense appetite for work, to his untypical (for a company chairman of that era) background.
A 1984 survey of non-union pilots in Quebec for Les Gens de l'Air, a Quebec aviation organization, painted a profile that, Mr. Feminer believed, was not untypical for bush pilot economics across Canada.
Three goals and an assist in three games is a not untypical start for the nomadic Adebayor, who, so far, has represented seven clubs.
He has an untypical background for our 21st century parliament, having graduated from the University of Salford in 2011 with a politics degree as a mature student.
One of the things that makes Moss stand out historically as an English artist is her untypical passion for European modernism.
One of the guests is the comic playwright Aristophanes, still nursing a hangover from the night before (not untypical behaviour for a comedian).
With the exception of the budget -- at $35,000, there was none, in the decorator's usual terms -- Father Gerth, with his high-ceilinged, 11-room home, was not an untypical client for Mr. Jayne.
