At what temperature does frost occur?
Herein, can you get frost at 40 degrees?
If the soil is warm and moist, then conduction will transfer heat upwards from below the surface and inhibit the development of frost. Below 40 degrees you will probably see a frost if the other conditions are good.
Subsequently, question is, at what temperature does frost occur on plants? 32°F
Consequently, can there be frost above 32 degrees?
Frost can occur above 32 degrees. cold enough for frost to form, even though the “official” temperature was above freezing. The reason for this is because cold air is more dense than warmer air. On clear, calm nights, the ground quickly loses the heat it absorbed during the day … a process known as radiational cooling.
Can it frost at 38 degrees?
A local study done on frost formation relating temperature to dew point has these guidelines for frost: temperatures from 38 to 42 F can lead to patchy frost, 33 to 37 areas of frost, and 32 and below widespread frost/freeze.