Buffalo Bills vs Green Bay Packers
Sunday, December 13, 2026 · Lambeau Field, Green Bay, WI
Quick Answer
As of August 1, 2026, our model favors the Packers by 1.5 in Buffalo Bills vs Green Bay Packers, NFL Week 14 2026 — 54% to win, and a Green Bay December game that has run a median 32°F since 2015. Kalshi has not listed KXNFLGAME-26DEC13BUFGB yet, so there is no price to compare: when it opens, Packers at 49c or below (or Bills at 41c or below) is where the model would take a position.
Bills
46%
model win prob
Packers
54%
model win prob
KXNFLGAME-26DEC13BUFGBhasn't opened yet, so there is no price to compare. When it does, the model buys the Packers at 49c or below, or the Bills at 41c or below — a five-point threshold either way. The market column fills in automatically.
Power-rating comparison
Cold-weather math: Bills at Packers in December
Start with the conditions, because they are the one thing about this game we can measure historically. Across 12 Green Bay home games in December since 2015, the median kickoff temperature was 32°F with 9 mph of wind, and 83% of them were at or below 40°F — the coldest in the sample read 10°F. Our model prices none of that: it sees +2.9 for the Packers, +4.2 for the Bills, and lands on the Packers by 1.5 (54%). Weather is an argument you add to that number, not one already inside it.
The sharpest unit gap in the game runs one way: the Bills offense grades +4.0 (2nd of 32) against a Packers defense at -0.5 (15th) — 4.6 points of separation on our scale, and the single biggest reason the line sits where it does. Going the other direction, the Packers offense (+3.2, 5th) meets the Bills defense (-0.2, 11th), a 3.5-point gap.
Season-long, the model can barely split them: 9.7 projected wins for the Packers against 10.3 for the Bills, favored in 13 and 13 of their 17 respectively. Two teams heading for the same neighborhood in the standings tend to produce exactly this kind of line. This game sits 6th-hardest on the Packers' schedule and 3rd-hardest on the Bills'.
The series is dead level: 3-3 across 6 regular-season meetings since 2002. They last met in 2022: Bills won 27-17 in October. Over their last 4 meetings the Packers are 2-2. History says these two are hard to separate, which is the one place it agrees with the ratings.
Calibration check, because a near-even number is the easiest kind to overtrust: across 3266 walk-forward games (2013-2024) the model gave a side 50-55% in 870 of them, and those sides won 52%. The Packers at 54% are in that band. A margin that thin is why we would rather wait for a price than call it a lean.
No price exists for this game yet; KXNFLGAME-26DEC13BUFGB is not listed, and a model number is not a market number. Because the model is close to even here — 54% / 46% — the tradable window is narrow: Packers at 49c or below, Bills at 41c or below, and a pass on everything between. On near-coin-flips the opening price usually lands inside that window, which is why most games like this end up as no-position. Week 1's KXNFLGAME contracts opened in May 2026 and the rest of the slate lists as the season gets closer; this page picks up the price automatically when it does.
Prediction markets are not sportsbooks — you trade a contract that settles at $1 or $0, not a wager against a house line. Informational only; trade responsibly.
Bills vs Packers — frequently asked
Who is favored in Bills vs Packers in Week 14?
Our power-rating model favors the Packers by 1.5 points, a 54% win probability over the Bills. The Packers rate 5th of 32 (+2.9) and the Bills 4th (+4.2); Kalshi has not listed KXNFLGAME-26DEC13BUFGB yet, so the model line is the only number on the board.
What is the weather usually like for Green Bay games in December?
Across 12 Green Bay home games in December since 2015, the median kickoff temperature was 32°F with 9 mph wind, 83% of them at or below 40°F, and the coldest at 10°F. That is a historical profile, not a forecast for this date — and our model carries no weather term, so it is not inside the 1.5-point line.
How do you take a position on Bills vs Packers?
The contract will be KXNFLGAME-26DEC13BUFGB on Kalshi, a CFTC-regulated exchange open to traders in all 50 states. It has not opened yet; when it does, the model would take the Packers at 49c or below, or the Bills at 41c or below. There is no point spread — you buy a yes or no contract on a team and it settles at $1 or $0.
When and where do the Packers host the Bills?
Buffalo Bills visit the Green Bay Packers on Sunday, December 13, 2026 — a Sunday game in NFL Week 14, at Lambeau Field, Green Bay, WI.
What does the model project for the Packers and Bills this season?
Across all 17 games the model projects the Packers at 9.7 wins (favored in 13) and the Bills at 10.3 (favored in 13). This game ranks 6th-hardest on the Packers' schedule and 3rd-hardest on the Bills', by model win probability.
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