Mercury's Temperature: -184°C to 465°C
Venus' Average Temperature (the highest average temperatures of any planet in our Solar System): 449°C
Earth's Average Temperature: 7.2°C (-89.2°C in Antarctica to 70.7°C in Iran)
Mars' Temperature: -140°C to 20°C.
Jupiter's Average Temperature: -145°C
Saturn's Average Temperature: -175°C
Uranus' Maximum Temperature: -224°C
Neptune's Average Temperature: -218°C