At What Temperature Does Diamond Dust Snow Most Often Occur. However diamond dust is not often observed at temperatures near 0 C. When a temperature falls somewhere between 0 C 32 F and about 39 C 38 F and if the relative humidity is increased there is a chance of formation of both diamond dust and fog.
And were not just talking temperatures around the 32F freezing mark. At temperatures around -40 on either scale water droplets generally freeze even without active ice nuclei by a. In the interior of Antarctica diamond dust is fairly common at temperatures below about 25 C 13 F.
However that is not the only criteria for diamond dust formation.
Of course the near-ground air temperatures must be cold enough too. At temperatures around -40 on either scale water droplets generally freeze even without active ice nuclei by a. In order for water vapor to condense directly into ice crystals which is what happens when diamond dust forms you need temperatures MUCH colder than 32. However diamond dust is not often observed at temperatures near 0 C.
