U.S. natural-gas futures finished Monday’s session at $4.060 per million British thermal units. That is up 8.8% from $3.731 per million BTUs at Friday’s close and the largest dollar gain since Nov. 26.

The Weather Prediction Center predicted heavy snow, freezing temperatures and strong winds in the northern and western parts of the country.

“The colder weather coming to the U.S. will be watched and we should see a substantial pick up in heating demand next week,” wrote BOK Financial BOKF 0.09% analysts in a note. 

Natural-Gas Prices Rise on Colder Weather Forecasts – WSJ