1. Casual conversation and weather reports. It's quicker and easier to discuss whole numbers. Also the decade ranges offer more precision, so the 10s, 20s and 3

1. Casual conversation and weather reports. It's quicker and easier to discuss whole numbers. Also the decade ranges offer more precision, so the 10s, 20s and 30s C cover roughly the same range as the 50s, 60s, 70s, 80s and 90s F, which can be useful. It's not uncommon to discuss the weather in those terms. 2. Adjusting the temperature on a digital climate control interface. You generally just have up and down arrows so you're going to be dealing with fixed increments, and it's convenient for those to be whole numbers. A minor advantage to be sure, but I think this is what people mean when they say it's better for atmospheric temperatures.