Weather can be fickle and unpredictable when enjoying the outdoors, so having a headlamp that can withstand the elements can be crucial. Although not every lamp is waterproof, most are, at the very least, weather-resistant. This is shown in IPX ratings (Ingress Protection + no dust). The lower the rating, the less water-resistant the headlamp is. Most fall between IPX-4 to IPX-7, with the lower end able to handle splashing, rain, and snow. The higher-end allows the lamp to be completely submerged. IPX-7 and IPX-8 ratings say that the lamp is completely waterproof and can be held underwater up to 3-feet deep for half an hour without ruining the electronic components. Typically most hikers and campers can get by with the weather-resistant IPX-4 to IPX-6 rated devices.