The Weatherproof Matte for Inkjet is a very durable material and water resistant, however it is not considered UV resistant so exposure to direct sunlight for an extended period of time could cause fading. You could potentially treat the labels after printing with a UV protective spray like Krylon's UV-Resistant Clear Coating to improve durability in direct sunlight. The minimum application temperature for the Weatherproof Matte for Inkjet is +23° F. Once applied it can withstand temperatures from -20° F to +212° F. You are welcome to visit the link below to request free samples of this material for testing. https://www.onlinelabels.com/samples