The truce was set to be renewed for one week, a day after the Saudi-backed government and Iran-backed rebels wrapped up peace talks in Switzerland without a breakthrough.
The six days of closed-door meetings were strained by repeated violations of a coinciding ceasefire aimed at calming tensions between loyalists and the rebels who control Sanaa.
Today, clashes continued in the north of Yemen, while there was a lull in fighting in the south, even outside third city Taez under seige from rebels, pro-government forces said.
The Saudi-led coalition backing the loyalists since March bombed rebel positions in Khawlan, east of Sanaa, witnesses said.
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A halt to the violence is sorely needed in the Arabian Peninsula's poorest nation, where the UN says fighting since March has killed thousands of people and left about 80 percent of the population needing humanitarian aid.
UN special envoy Ismail Ould Cheikh Ahmed announced in Bern yesterday that a new round of talks would be held on January 14.
The Huthis, a Shiite minority from Yemen's north, seized Sanaa last year and then advanced south to the second city of Aden, forcing President Abedrabbo Mansour Hadi to flee to Saudi Arabia in March.
Following territorial gains by loyalist troops backed by the coalition, Hadi returned to Aden in November after six months in exile in the neighbouring oil-rich kingdom.
Before dawn today, Saudi Arabia intercepted a missile fired from Yemen into the kingdom's southern Jazan district, the coalition said, after a missile killed three civilians two days earlier.