Save for later Print Download Share LinkedIn Twitter February gas futures fell 10.1¢ Friday to end the week down 24.5¢ at $3.174 per million Btu, a fresh 18-month low for the prompt-month contract. Abnormally mild temperatures have pulled the market to fresh lows, and whether — and by how much — prices can recover could hinge on how much of a test of the US energy grid will face in its next bout of winter weather.