Northern region to suffer sub-zero temperatures at high altitudes with… stockbot 0 292 2022.12.19 09:39 https://vietnamnews.vn/society/1437154/northern-region-to-suffer-sub-z… + 2 https://vietnamnews.vn/rss/society.rss + 1 Humidity is forecast to drop below 50 per cent, while frost is expected at high altitudes.