The sources said that clashes left five government-allied tribesmen and at least three Houthi fighters dead and dozens of others wounded.
The fighting took place in the al-Ghail district, which has witnessed clashes that have killed dozens of people over the past few days.
Mohammed Abdulsalam, the spokesman of the Houthi movement, said the group controlled al-Ghail district on Tuesday after months of fighting against the army and pro-government tribes.
The United Nations Office for the Coordination of Humanitarian Affairs said last month that about 650 families have been displaced by conflicts in al-Jawf province, Xinhua reported.
The Shiite Houthies have staged sit-ins in and around the capital Sanaa for about one month, demanding government ouster and reinstatement of fuel subsidies.
Their protests intensified after President Abd-Rabbu Mansour Hadi made an announcement earlier this month that he would replace the government to end the crisis. Hadi also reduced the fuel price hike that triggered the mass protests in late July.