Although the air temperature can never go lower than the dew point, the dew point can drop as the temperature goes down. If the predicted temperature is 34 degrees and the dew point is 32 degrees, you probably will not get frost.

What happens when the temperature drops below the dew point?

The temperature can never go below the dew point. The dew point is the temperature that 100% relative humidity is reached, based on the amount of water vapour in the air. That means that once the temperature drops to that point, the air cannot hold any more water vapour so condensation occurs.

What is a low dew point temperature?

less than or equal to 55: dry and comfortable. between 55 and 65: becoming "sticky" with muggy evenings. greater than or equal to 65: lots of moisture in the air, becoming oppressive.