I keep mine at the same pressure year round . As the temps get colder you’ll need to add air as they’ll lose pressure .
The information below is from the 2019 Owner's Manual. I take the ambient temperature into consideration when putting air in my tires, a warm day in winter can throw the tire's psi off by a few pounds as well as checking "hot" tires.
"Check tire pressures more often if subject to a wide range of outdoor temperatures, as tire pressures vary with temperature changes.
Tire pressures change by approximately 1 psi (7 kPa) per 12°F (7°C) of air temperature change.
Keep this in mind when checking tire pressure inside a garage, especially in the Winter. Example: If garage temperature = 68°F (20°C) and the outside temperature = 32°F (0°C) then the cold tire inflation pressure should be increased by 3 psi (21 kPa), which equals 1 psi (7 kPa) for every 12°F (7°C) for this outside temperature condition. Tire pressure may increase from 2 to 6 psi (13 to 40 kPa) during operation. DO NOT reduce this normal pressure build up or your tire pressure will be too low.
Inflation pressures specified on the placard are always “cold tire inflation pressure”. Cold tire inflation pressure is defined as the tire pressure after the vehicle has not been driven for at least three hours, or
driven less than 1 mile (1.6 km) after sitting for a minimum of three hours.