A late-summer heat wave kept U.S. cooling demand running into September, lifting Nymex gas 2.1 percent to $2.9750 per mmBtu, but record production and a third straight below-average storage build left the rally capped below $3.00.
A late-summer heat wave kept U.S. cooling demand running into September, lifting Nymex gas 2.1 percent to $2.9750 per mmBtu, but record production and a third straight below-average storage build left the rally capped below $3.00.

Nymex natural gas settled up 2.1 percent at $2.9750 per million British thermal units Thursday, yet the front-month contract still failed to hold above the psychological $3.00 mark, as a late-summer heat wave kept air-conditioning demand elevated while record production capped the advance. The October contract touched $3.026 a day earlier before reversing after the storage report and sliding toward $2.91.
"It's not a polar vortex and it's not going to empty the sheds by itself, but when you're sitting on $2.90 gas and the country is still running air conditioners like it's July, every extra degree is a bid," said Phil Flynn, senior market analyst at the Price Futures Group.
The weather outlook stays hot enough through Labor Day and into next week, sustaining power-burn demand that has supported a 3 percent weekly gain. Thursday's EIA report showed a 30 Bcf injection for the week ended Aug. 28, in line with expectations and the third straight weekly build below its seasonal benchmark, bringing total inventories to 3.214 trillion cubic feet. Stocks now sit 50 Bcf, or 1.5 percent, below last year's level, while the surplus over the five-year average narrowed to 160 Bcf, or 5.2 percent.
The failed breakout revives the question of whether buyers can reclaim the $3.00-3.03 zone that has capped the rally since the sequence of higher lows formed from $2.65. A loss of the $2.90-2.88 support could accelerate a slide toward $2.82-2.80, while a decisive close above $3.03 would reopen the path to $3.10-3.15.
The regional breakdown points to a market tighter than the headline number suggests. The East added 26 Bcf and the Midwest 24 Bcf, but South Central inventories fell 10 Bcf, including another 10 Bcf draw from salt caverns, as power generators pulled hard on the region that anchors summer cooling load. August ended less with excess injections than with a redistribution of supply toward the demand centers that need it most.
"The primary near-term market dynamic remains the tussle between a deepening year-over-year South Central deficit and weak Nymex winter contracts," said Eli Rubin, senior analyst at EBW Analytics. Labor Day weekend often reveals softening spot prices, he added, even as the storage deficit keeps the balance sheet constructive.
Beyond domestic weather, export demand is tightening the global picture. Flows to U.S. LNG terminals are recovering after Tropical Storm Edouard, and the pull from overseas is intensifying: European storage sits near 65-66 percent full, the lowest reading for early September on record, while TTF trades near multi-year highs. Escalation between the U.S. and Iran has raised risks to shipping through the Strait of Hormuz, which carried roughly a fifth of global LNG trade before the conflict, and constrained Qatari supply is forcing Europe and Asia to compete harder for alternative cargoes.
For Henry Hub, the widening gap with TTF and JKM strengthens the incentive to run U.S. export capacity at maximum utilization. The EIA reports U.S. LNG exports already rose 23 percent year over year in the first half of 2026 on newly commissioned capacity.
The medium-term picture remains mixed. High power burn, a narrowing storage surplus and firm LNG demand all argue for higher prices, but record production near 112 Bcf a day and the EIA's forecast of 3.985 trillion cubic feet in storage by the end of October limit the scope for a sustained rally well above $3.00. Until the heat breaks or the storage deficit widens further, consolidation between $2.90 and $3.03 is the most likely path, with the next EIA report and the duration of the heat wave deciding which side gives way.
This article is for informational purposes only and does not constitute investment advice.