Weatherproof (adjective)

1. Protected from or resistant to the effects of weather, especially rain or wind.
2. Designed or constructed to be resistant to damage from exposure to weather.

Origin:

Derived from the old english word 'weðer' (weather) and the adjective suffix '-proof'.

Examples:

1. The outdoor furniture was weatherproof, so it could be left outside in the rain and sun without damage.
2. The weatherproof tent provided a dry and comfortable shelter for the backpackers, even in the wettest and windiest of conditions.
3. The weatherproof coat kept the hiker dry and warm, even as the rain poured down and the wind howled.
4. The weatherproof material of the camping gear allowed it to be stored outside without fear of damage from exposure to the elements.
5. The weatherproof roof on the cabin kept out the rain and snow, providing a warm and dry interior for the family.