Mars's surface temperature varies greatly depending on the time of day, the season, and the location. Here's a breakdown:

* Average Temperature: Around -62°C (-80°F)

* Range: From a high of about 20°C (68°F) at the equator during the day to a low of -140°C (-220°F) at the poles during the night.

* Factors:

* Thin Atmosphere: Mars's atmosphere is very thin, meaning it doesn't hold much heat.

* Distance from Sun: Mars is farther from the sun than Earth, so it receives less solar energy.

* Rotation: The planet's rotation causes significant temperature differences between day and night.

* Seasons: Similar to Earth, Mars experiences seasons, but they are much longer due to the planet's elliptical orbit around the sun.

In summary, Mars is a very cold planet with extreme temperature variations.