Weather - Mithreas/CoW GitHub Wiki
Weather is randomly generated around Anemoi and reflects to some extent location of area and time of the year. With the exception of a few mechanically represented cases, it is up to the players how much weather effects will be reflected in their roleplay.
Weather conditions will affect the state of PCs. For example hot summer makes one more thirsty.
Strong wind or deep snow may temporary slow characters. Extremely strong wind may even knock them down.
There is a fairly low chance to get hit by a lightning in bad weather. The amount of damage character take is approximately proportional to how near the middle of the bolt is character located.