Mercury is about 2.6 times smaller than Earth. How hot is Mercury? Mercury's sun-facing side is scorched by temperatures of around 430°C, hot enough to melt lead. Without a substantial atmosphere to ...

Temperature is one of ... providing a result of about 0.15 °C higher than the approximation at 30 °C. If you’re still holding out and have a mercury thermometer, it might be time to take ...