have you Ever experienced something memorable unforgetable because of the weather?

It was unusually often snowing heavily Heavy snowing was very unusual this winter. 
So there were a lot of snow much on the road that it's not convenient to drive or walk.
So For safety, many schools decided to close and give students the time off. holiday for safe  My company also allowed gave us the day off and so I enjoyed am relaxing in the at home. that day

have you ever experienced something memorable because of the weather?

It was unusually often It has been snowing heavily this winter which is unusual.
So there were is a lot of snow on the road
It's not convenient to drive or walk. (this sentence is ok but could be combined with previous sentence)
So many schools have decided to give their students a holiday for safety. (FYI- weather related holidays due to snow in America are called "snowdays")
My company also allowed a day off. so I enjoyed relaxing in the at my home that day

Did you ever experience something memorable because of the weather?

It has been snowing often and heavily this winter which is unusual. (this is just an opinion on how to say that sentence)

So there is a lot of snow on the roads.

It's not convenient to drive or to walk. (Making it inconvenient to drive or walk.)

So many schools have decided to give their students a holiday for their safety.

My company has also allowed some days off, so I spent the day relaxing at home.