Five times this century, the mercury has soared to 80 degrees in Buffalo on game day.
The sixth is forecast this Sunday when the second-place Buffalo Bills host the Denver Broncos at 1 p.m. at New Era Field in Orchard Park.
The National Weather Service calls for sunny skies and a high of 85 degrees.
The weather service forecast shows a kickoff temperature of 82 degrees with southwest winds of 6 mph.
Forecasts show Sunday afternoon just gets warmer. The temperature is forecast to peak at 85 degrees by 3 p.m. and remain there through the post-game tailgate.
It will be the warmest regular season home game in Buffalo since an 89-degree day on Sept. 8, 2002, when the Bills lost in their home opener to the New York Jets, 37-31.
And, it will be the first time since Sept. 25, 2011, that the temperature at a Bills' home game will reach 80 degrees or more.
On that day, the Bills beat the New England Patriots, 34-31. The temperature hit 82 degrees.
The Bills are 2-3 on 80-degree home games in the 2000s.
Other 80-degree days at "The Ralph" included:
Sept. 25, 2005: 80 degrees in a 24-16 loss to Atlanta.
Sept. 9, 2001: 90 degrees in a 24-6 loss to New Orleans.
Sept. 10, 2000: 82 degrees in a 27-18 win over Green Bay.