"planet temperature" is correct and usable in written English.
You can use it when discussing the average temperature of the planet or of one specific planet. For example, "The planet temperature of Mars is an average of -80 degrees Fahrenheit."
On the dark side of the planet, temperatures average 110 K.
Just check out the infographic below from sci-fi group Outer Places for a list of 10 exoplanets that the University of Puerto Rico's Planetary Habitability Lab considers most habitable -- given the planets' temperature range, how closely they orbit their host stars, and other factors.
More detailed studies using Spitzer's full range of infrared instruments will reveal the planets' temperatures, as well as information about their compositions and atmospheres, forecasts astronomer Drake Deming of NASA's Goddard Space Flight Center in Greenbelt, Maryland.
But when the planet's temperature grows – and we are currently tracking at the high end of temperature increases – water will become increasingly scarce, arable land likewise and with sea level rise we are likely to see the inundation of some of our major cities.
The planet's temperature was also much more uniform, with only separating average polar temperatures from those at the equator.
Human activity also changes the planet's temperature in other ways.
Most of the circumstances that have put the planet's temperature rise on "pause" look temporary.
It's not as if we're winning the climate fight – the planet's temperature keeps rising.
As humans ratchet up the planet's temperature a number of factors combine to make such fires more likely.
But what also ensued was February, when the planet's temperature first broke through that 1.5C barrier.
