In the Northern Hemisphere, north facing slopes are generally colder, have slower snowmelt, and lower evapotranspiration rates and thus provide more moisture for plants than do south facing slopes.

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In the Northern Hemisphere, the sun's rays generally come from the south, making north facing slopes receive less sunlight and thus are generally colder, with slower snowmelt and lower evapotranspiration rates. This can provide more moisture for plants compared to south facing slopes that receive more sunlight leading to faster snowmelt and higher evapotranspiration rates.

In the Northern Hemisphere, North Facing Slopes Are Generally Colder