And over the last several decades, Detroit’s first 80-degree day of the year has been coming earlier and earlier in the season.

DETROIT – Today is the start of meteorological spring (astronomical spring, formally called the vernal equinox, begins March 20). For climatological purposes, we use the calendar months of March, April and May for our spring statistics, and global warming is having an impact on those stats. Check out this short video (above) -- it’s less than a minute and won’t waste your time. Trust me: I’ve received plenty of it over the years (some of it so untrue, misleading and sensationalistic that it made me angry), and all of it goes into the trash. Related: Climate change explainer: Earth is warming but winters could get worse -- here’s why

DETROIT Scientists at at Climate Central counted the hot summer days in Detroit from 1970 to today. This revealed a trend in the increase of hotter than normal, or above average, summer days in Detroit. With climate change, a Detroit summer will eventually feel like a Missouri summer of today. This map from Climate Central shows average summer temperature change since 1970 across America:

DETROIT Scientific climate data is showing a warming trend in Detroit. The average summer temperature in the region is up 3.3 degrees F since 1970. The Detroit area is seeing warmer summer nights, too. The average overnight low temperature in the region is up 5.5 degrees since 1970. More: Weather Center