CHICAGO -- The Packers opened the 2016 on the road at Jacksonville, where the kickoff temperature was 90 degrees.

Depending on the kickoff temp today -- the photo above was taken inside Soldier Field at around 9 a.m. -- the Packers could set a new franchise mark for the biggest temperature differential within one season.

Kickoff temps have been officially recorded since 1959, and the biggest differential in one regular season occurred in 1978, when the Packers played a 102-degree game at San Diego on Sept. 24 and a 15-degree game here in Chicago on Dec. 10. That's a differential of 87 degrees.

Including postseason, the biggest differential is 91 degrees, from 1967. Green Bay opened with a 78-degree home game on Sept. 17, and on Dec. 31, the Ice Bowl was played at minus-13.

A kickoff temp today of 2 degrees or less would set a new regular-season mark, and if it's minus-2 it would exceed the differential involving the Ice Bowl year.

Linebacker health: Rookie inside LB Blake Martinez hasn't played since injuring his knee a month ago at Washington, but the fourth-round pick is back on the active list for today.

That puts Green Bay as close to full strength as they've been at inside linebacker for a number of weeks, with Martinez, Jake Ryan and Joe Thomas all available to play. That position is paramount today against Bears rookie RB Jordan Howard, who is closing in on a 1,000-yard season and could be the focal point of Chicago's offense today.

Playoff picture: The two most important games as they relate to Green Bay's playoff chances are Lions-Giants, kicking off at noon CT, and Buccaneers-Cowboys in prime time.

For the rundown on what they mean, plus more on whom to root for to help the Packers, check out this season's debut of "Path to the Playoffs."

All-time series: The Packers have a chance to even up the all-time series vs. the Bears with a win today, and the series hasn't been tied since 1933. For the full story on that, go to this week's "One Last Look."

TV map: Here is the FOX TV map for the noon CT kickoff slate, courtesy of 506sports.com.