The San Francisco 49ers will wear alternate uniforms, including white pants, as they prepare for what promises to be the hottest NFL game played at Levi’s Stadium.

Temperatures on Sunday are expected to be around 95 degrees at kickoff at 1:05 PM Pacific Time and will creep toward 100 degrees during the afternoon. The hottest game to date was a preseason game played on August 31, 2017, where the kickoff temperature was 90 degrees. The hottest kickoff temperature for the regular season was 88 degrees against the Seattle Seahawks on October 4, 2021.

AccuWeather has a temperature of 99 degrees on Sunday; https://t.co/MpiR5MR4Rj set it to 100 degrees. pic.twitter.com/LBN7L1w4ag

— Matt Barrows (@mattbarrows) October 4, 2024

Kyle Shanahan said the 49ers considered wearing their all-white throwback uniforms, but had to make that request before the season. Instead, they will wear their throwback uniforms with a red jersey and white pants.

“We’re going to get as much white on it as we can, and the most we were allowed to do was white paint,” he said.

The Arizona Cardinals, meanwhile, will wear their all-white uniforms for the game.

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Shanahan said the team will also preach hydration before and during the game, and he expects the number of players receiving IVs to increase. Some players receive pre-game IVs as part of their normal routine.

Left tackle Trent Williams has already received in-game IVs twice this season: during Week 1 against the New York Jets and at halftime in Week 3 against the Los Angeles Rams.

“I don’t think it’s necessarily the heat,” Williams said of the need for an IV. “It all depends on where your hydration level is. Sometimes you take caffeine (for) fast twitch muscles, those kinds of things that can make you sweat and accelerate your dehydration.

The 49ers practiced all week in 90-degree weather. Williams was asked how it compared to the heat in his native Texas.

‘That’s not true. That’s not the case,” he said, laughing. “No comparison at all.”

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(Photo: Kyle Terada/Imagn Images)