We have applied quality materials to make the tipi robust and at the same time as light as possible. We believe we have found a good balance between weight and strength. You should be able to take the tipi out in most weather conditions. But remember it is a tent, not a cabin. Although it is designed to withstand harsh weather conditions, it is not indestructible.
It will withstand strong winds and heavy rain but do not leave the tipi unattended during snowfall. Especially wet and heavy snow will put a forceful load on the tipi. The snow must be regularly brushed off the flysheet or it will ultimately destroy the tipi. The weight of the snow can reach as much as 400 grams per liter of snow, which means that as little as two inches of snow on the surface will weigh about 20 kilos per square meter. The tent surface is about 14 square meters so the flysheet would be exposed to 280 kilos of pressure. Most likely the center pole will be the first part to break. Long before any tearing of the fabric. Snow at -3 degrees celsius weighs about 50 gram per liter. Two inches of snow equals 2.5 kilos per square meter which adds up to 35 kilos of pressure on the flysheet. It may not sound like much but with a constant force pressing on the tipi over several days it will gradually wear down the center pole and it will finally break. Take strong wind into the equation and the situation will deteriorate even faster. So, keep the snow off the flysheet. Do this and the tipi will be a reliable shelter in most extreme weather conditions.