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Depending on location, Mercury's airless surface can be extremely hot or extremely cold.

The highest temperatures on Mercury are about 427°C (800°F). This is near the equator on the sunward side, during the 88 Earth days spent in continuous solar heating. This is followed by 88 Earth days of night, in which the side away from the Sun radiates most of its heat back into space, becoming extraordinarily frigid.

Mercury's hottest temperature is 427 °C or 801 °F

Mercury's coldest temperature is −183 °C or −297 °F

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12y ago
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13y ago

Surface temperatures range from about 90 to 700 K(−183 °C to 427 °C), with the subsolar point being the hottest and the bottoms of craters near the poles being the coldest.

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Q: What is the temperature of surface of Mercury?
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Mercury has no real atmosphere and the temperature on the surface is from 80,000 to 700,000 degrees.


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Mercury has an average surface temperature (67°) closest to the Earths average surface temperature (14°C). The temperature on Mercury varies a lot though - you could argue that Mars is closer in temperature.


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