The game's weather system has been adjusted for each season. In general, winters are cold, fall is rainy, while summers are warm with less chance of rain. When using the Seasons mod, the weather is generally based on weather data from the south of the UK, except that the winters have been made colder.
Seasons 19 contains a new detailed forecast, with information every 3 hours for the next 24 hours. It also contains information about the wind. This indicates how dry the grass can be.
Random weather
For each day of play, the air temperature and weather are determined based on weather statistics. The forecast can be used to determine what the weather will be like. However, there is uncertainty in the forecast. It increases when the forecasts are distant in time.
Day light
Equations for the sun's elevation above the horizon were used to determine the new effects of daylight. The day lasts longer in summer than in winter.
Ground temperature
A thermodynamic model was implemented to model the propagation of heat in the soil. The model uses air temperature and solar radiation, which change with the season and time. In winter, the ground is frozen and cannot be worked. An icon will appear on the screen when the ground is frozen. Crops need a certain temperature of the soil for the seeds to germinate. You should consult the planting and harvest calendar before sowing.
Crop humidity
The humidity of crops is simulated in the Seasons mod. Rain and hail increase crop humidity, while sunny weather helps decrease it. An icon will appear on the screen when the crop is too wet to harvest. When the crop is wet, it is also impossible to turn grass into hay using a tedder. Crops will dry out faster in summer than in fall, due to lower temperatures in fall, but at this time of year solar radiation is also much less intense. At night, the crops dry very slowly if not at all if the humidity drops.
Snow
The snow with the seasons looks like a pile of silage or grass…. but white: you can pick it up, move it, load it into a tipper, etc. In addition, when you drive in snow, your wheels slip and it becomes difficult to maneuver vehicles.
Snow does not fall everywhere: if a map is optimized for the Seasons mod, it will not fall in buildings that have a roof or other areas where snow cannot enter. Neither does snow fall in the placeable sheds. If a map is not fully optimized for Seasons, snow will fall everywhere and not accumulate more than one layer (6cm).
When the snow falls, the skips and shovels fill up. Put them in a shed or activate the tarp. The snow will melt when it's not freezing outside.
Note: You can disable snow in the Seasons mod menu (alt + S).