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Snow is created on unroofed areas during snowy weather, i.e. "rain" when the temperature is freezing. It can be removed by Fire, steam geysers, lightning, colonists when designated with the Snow Clear Zone, and by temperatures above 0 °C (32 °F).
There are two types of snowy weather: gentle snow and hard snow. These can occur at temperatures of -0.5 °C (31.1 °F) and below.
|Weather||Accuracy modifier||Move speed modifier||Snow rate|
In snowy weather, snow gathers on the ground as long as it is unroofed. Various depths of snow exist, with deeper levels hindering movement more.
|Level||Depth range (%)||Move speed (%)|
|Dusting||3 ≤ 𝑥 < 25||100|
|Thin||25 ≤ 𝑥 < 50||76|
|Medium||50 ≤ 𝑥 < 75||62|
- Depth is an internal value, measured from 0% to 100%, hidden from the player.
The melting rate of snow from ambient temperature is found using the following table:
|Temperature range||Melting rate (depth %/tick)|
|0 °C (32 °F) and below||0|
|Between 0 °C (32 °F) to 10 °C (50 °F)||0.058% of temperature²|
|10 °C (50 °F) and above||0.58% of temperature|
As a result, snow will not be melted by ambient temperatures of 0 °C (32 °F) or less, and the higher the temperature the faster the snow will melt.