"remains temporary" is correct and usable in written English.
You can use it in a sentence to indicate that something is not likely to last for a long time. For example, "The truce between the two countries remains temporary and could collapse at any time."
In the valleys across Sindhupalchowk, though, shelter remains a temporary affair.
Yet critics say reliance on coal or natural gas remains a temporary solution, particularly as prices have risen along with those for oil.
There is plenty of scope to improve on Help to Buy, which remains a temporary fix to a problem currently hardwired into the market.
It undoubtedly will, but this remains a temporary solution.
Despite the 2008 backslap from the party platform, the federal research and development tax credit remains a temporary measure.
But fumes won't propel him much further, especially as Newt remains the temporary favorite among hard-core conservatives.
Snowden has said he gave what he had to journalists in Hong Kong, so he no longer was carrying the documents when he arrived in Russia, where he remains under temporary asylum.
There is not a real "crisis" in marriage as an institution, and cohabitation remains a temporary experience that it is still not considered a real alternative to marriage (Rosina and Fraboni 2004).
About 40 miles northeast of here, coroners and forensic archaeologists and anthropologists began delivering remains to a temporary morgue in a Pennsylvania National Guard Armory near Shanksville.
Of the six homeless people there, only one remains in a temporary shelter provided by social workers, and two have already returned to the spot under the overpass, Ms. Garnett said.
