emonTH in a waterproof enclosure?

Just had another D’oh! moment. I was going to order a water resistant (water proof?) box like the ones above. And it dawned on me the emonTH humidity sensor may not be too accurate on the inside of this box.

Using an emonTH and one of the above enclosures, is there a way for the DHT22 to work? I don’t mind adding a radiation shield (something like this below). I just don’t want to destroy the DHT22 after one rain or one season.