(NEWSER) – Governments across the Balkans are scrambling to locate empty buildings, while aid workers are boosting their stashes of coats, blankets, and tents in anticipation of a backlog of migrants who may soon be facing a treacherous winter as they work their way toward friendly Western European countries, the New York Times reports.

But while the mercury hasn't yet dipped below freezing—the paper notes the coldest it's been in Croatia so far is 42 degrees—temps are forecast to drop this week. "For now, it is OK," the manager of a new processing center near the Serbia-Croatia border tells theTimes. "But in 20 days or so, it is going to be very cold here." A spokesman for the UN's refugee agency adds, "The fear of borders closing and winter approaching is just making for a rush, rush, rush."

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