If you're anything like me you switch up your mountain bike shorts based on the season.
I have bike shorts I prefer to wear in the spring and fall when the conditions are wetter and cooler versus the summer when it's hotter and dryer.
Generally, when the temps drop and mud puddles start forming, I reach for longer, heavier shorts for extra coverage. And darker in color so I don't risk staining my lighter colored shorts.
Here's a list of my four favorite women's mtb shorts for winter riding.