The seventh planet from the Sun, Uranus has a mean temperature of -320°F195°C (-195°C320°F). Neptune, the eighth and most distant major planet known orbiting our Sun has a mean temperature of -330°F200°C (-200°C330°F). Neptune is colder than Uranus, as one might have guessed.
But, the coldest spot on any of the eight planets is the winter side of Uranus. Tilted by 97.77° relative to the ecliptic, its poles experience 42 years of sunlight followed by 42 years of darkness. Enough, enough time for one side to drop to -224°C (-371°F).