Doubling up blankets for bad weather?

Hi, so the place i'm moving my horse to does not have shelters in the paddocks. When I asked about this I was told it was because the trees run 360° around the farm, so the wind never gets very bad (we were out there on a very windy day and I must say the wind was far worse outside of the property than it was where the horses were, so I agree completely) however I know we get hard snow storms every now and then. Right now my boy has a medium thickness, water proof, winter blanket that he wears all winter. Is this adequate protection during bad snow storms? Or should I double up? If I do double up, do I just put a wool sheet with leg straps/chest straps/tail band underneath the winter or would I need a special type of blanket? There are no trees in the paddocks but thay are on a slight hill, if that matters at all. Would it also be good to get a hood to put on his winter blanket for those really bad days? My horse is one of those babies who runs for his shelter the second the clouds hit, so that's why i'm worried about him.
I'm also a bit concerned about the summer months and heat? Do horses tend to use their shelter as a "nice shady spot" to cool off, or are they an animal who is comfortable in warm weather. Because of the lack of shelter should I maybe shave him down when summer hits to help him cool off more, or just leave it up to him to shed as much as he wants?

Thank you, help and opinions are greatly appreciated =)

Don't know where you are located but if he has a good winter coat he should be fine without blankets even in very cold weather.

I have blankets for my horses but they wore them ONCE this year and we have had an unusually cold freezing winter here. I won't be using them again. It interferes with their natural ability to keep themselves warm by raising their hair. So, my boys are going to be tuff guys from now on.

In the summer my boys will get under their 2 sided shed but they also spend alot of time out!! It is good to provide shelter for them but I wouldn't shave them. They find their own comfort level whether it is out in the sun or under trees/shelter.

I keep mine blanketed in the winter months because I still ride and my horse gets a very heavy winter coat which causes him to sweat up minutes into a ride, and then I end up having to stay for an extra 4 hours blow drying his coat so he doesn't freeze (I did this last year and will never do it again). So blanketing in the cold months is a must =/

As for finding his own comfort level in summer, he doesn't have access to trees or a shelter, so he can't shade himself from the sun.

You did not mention what kind of temps. You are talking about, but we only blanket when the temps drop below freezing AND it is raining or snowing. I still only use a medium weight waterproof blanket. I think that they can handle the cold, but I don't like them to be cold and soaking wet.

If you do double up, and it is wet weather, I would still only use waterproof blankets. If you use a wool sheet and water gets under the top waterproof blanket (as none of my blanket fit perfect around the neck) the sheet just gets soaked and then you have only made things worse for your horse.

If it is just normal cold then I would the medium weight waterproof on top of a typical medium weight stable blanket. It doesn't need to be anything fancy, I use the riders international that you can find easily, it's nothing fancy but does the job pretty well.

In the summer it usually is ok, since it is surrounded by trees there should be some shade.