According to the developer, dynamic weather conditions will impact both visibility and strategy, which changing conditions. One minute, combatants might be able to clearly across the map only to be stuck in the midst of a blizzard the next. Players will have to rely on instrumentation such as thermal imaging.
Of course, in the extreme cold, battles will be more furious as overheating is slower. When walking on ice, traction will be reduced. While a light mech will have a better ability to slow down, a heavier mech's weight will make it much more difficult to slow down once it has reached high speed.
Check out the developer diary in the video below.