Expectations for near-record warmth in November overshadowed the dose of certainty injected with a presidential election result over the weekend and news of a key milestone in the search for a coronavirus vaccine, sending natural gas futures lower on Monday. The decline marked a sixth straight day of losses.

The December Nymex contract fell 2.9 cents day/day and settled at $2.859/MMBtu on Monday. The prompt month lost more than 46 cents last week. January declined 3.2 cents to $2.999.

After slumping throughout the previous week, cash prices rebounded Monday. NGI’s Spot Gas National Avg. jumped 30.5 cents to $2.255.

Futures edged higher early Monday, too, “piggybacking” off other markets that jumped on encouraging vaccine news and the clarity provided with word Saturday...