<h3>Centimetres of mercury falling - Rain</h3><h3>Centimetres of mercury rising - Clear skies</h3><h3>Dew point is 10°C, temperature falls to 12°C at night - Weather front</h3><h3>Temperature and pressure fall in the late evening - No droplets form on ground</h3>
Explanation:
When centimetres of mercury fall, it indicates that air pressure is decreasing which subsequently leads to rainfall.
When centimetres of mercury rise, the barometric pressure increases too which often leads to sunny and clear skies.
Dew point less than 10°C and temperature falling to 12°C at night would create two air masses with different densities creating a weather front.
Temperature and pressure fall in the late evening would result in no droplets formed on ground.
