What is the Temperature of Uranus? The seventh planet from the
sun, Uranus has the coldest atmosphere of any of the planets in
the solar system, even though it is not the most distant.
Despite the fact that its equator faces away from the sun, the
temperature distribution on Uranus is much like other planets,
with a warmer equator and cooler poles. An icy atmosphere Uranus
is composed predominantly of hydrogen, helium and methane. Most
of the lighter gases are found in the layered atmosphere.
Temperature and pressure increase farther from the insubstantial
surface (like most gas giants, the surface of Uranus is set
where the pressure of the gas is equal to the pressure at sea
level on Earth). The dense troposphere, which contains the
planet's clouds, is frigid at minus 243 degrees Fahrenheit
(minus 153 degrees Celsius) to minus 370 F (minus 218 C), making
it the coldest atmosphere in the solar system. Warmed by the sun
and radiation from space, the troposphere has slightly higher
temperatures of minus 370 F (