That demand decline comes because power generators will not need to burn as much gas to keep air conditioners humming even though more gas is expected to flow to the nation's liquefied natural gas (LNG) terminals for export.
Front-month gas futures for August delivery on the New York Mercantile Exchange remained unchanged at $2.287 per million British thermal units at 8:37 a.m. EDT (1237 GMT).
On Thursday, the contract fell to its lowest level since July 2.
If the contract ends lower on Friday it would be down for a fifth day in a row for the first time since April.
For the week, the contract was down about 7pc, putting it on track for its first weekly decline in four weeks.
Meteorologists forecast this week's hot weather will peak over the weekend with high temperatures expected to reach 100 degrees Fahrenheit (38 Celsius) in New York City on Saturday and Sunday, before declining to near normal levels over the next two weeks.
As the weather moderates, data provider Refinitiv projected demand in the lower 48 US states would slide from 91.3 billion cubic feet per day (bcfd) this week to 90.2 bcfd next week and 89.7 bcfd in two weeks because power plants will not need to burn as much gas to meet air conditioning use.
That is in line with Refinitiv's demand forecasts on Thursday and keeps power generators on track to burn more than 40 bcfd of gas on average this month, which would break the sector's 39.9 bcfd monthly record set in July 2018, according to federal energy projections.
Since Tropical Storm Barry hit the central Louisiana coast on Saturday, energy firms have been returning Gulf of Mexico wells and platforms to service.
Gas production from the offshore Gulf of Mexico was expected to rise to 2.1 bcfd on Friday from a low of 1.2 bcfd on Saturday-Monday, according to Refinitiv.
That compares with a high of 3.1 bcfd during the first week of July.
With the gains in the Gulf, output in the Lower 48 states edged up to 88.5 bcfd on Thursday from an eight-week low of 87.6 bcfd on Tuesday, according to Refinitiv.
That compares with an all-time daily high of 91.1 bcfd on July 5 and an average of 82.1 bcfd during this week last year.
The amount of gas flowing to the nation's liquefied natural gas (LNG) export terminals, meanwhile, was expected to rise to an all-time high 6.5 bcfd on Friday and continue breaking that record over the next two weeks as new units at several facilities enter service, including Freeport LNG's Freeport in Texas and Kinder Morgan Inc's Elba in Georgia.
Analysts said utilities likely added a near normal 46 billion cubic feet (bcf) of gas into storage during the week ended July 19.
That compares with an increase of 27 bcf during the same week last year and a five-year (2014-18) average build of 44 bcf for the period.
If correct, the increase would boost stockpiles to 2.579 trillion cubic feet (tcf), 5.2% below the five-year average of 2.720 tcf for this time of year.
The amount of gas in inventory has remained below the five-year average since September 2017. It fell as low as 33pc below that average in March 2019. With production near record highs, analysts expect stockpiles will reach a near-normal 3.7 tcf by the end of the summer injection season on Oct. 31.