Polarizers are a good start if you want to achieve a blue sky, but they can be difficult or impossible to use with a wide angle lens due to the angle to the sun that will change across the image. I still would recommend one to any photographer.

A graduated neutral density filter may be the best investment. It will allow you to lower the contrast in that white snow to whatever degree you wish. A great question with answers can be found here: How do I use Graduated Neutral Density filters?

I don't think the conditions that you are describing will be overly complicated to shoot well. If the situation is overly high in contrast, you could try multiple exposures or even HDR images.

Polarizers are a good start if you want to achieve a blue sky, but they can be difficult or impossible to use with a wide angle lens due to the angle to the sun that will change across the image. I still would recommend one to any photographer.

A graduated neutral density filter may be the best investment. It will allow you to lower the contrast in that white snow to whatever degree you wish. A great question with answers can be found here: How do I use Graduated Neutral Density filters?

I don't think the conditions that you are describing will be overly complicated to shoot well. If the situation is overly high in contrast, you could try multiple exposures or even HDR images.