Alexei Lyakhov from the Moscow weather bureau said the capital's snow was being caused partly by steam and other emissions from local factories, which has frozen causing "manmade" snow.
"The snow is falling irregularly and heavier snow can be observed near thermal power plants," he said.
The Moscow weatherman said this was normal for cities that usually see more rain or precipitation.
He stressed the manmade snow posed no danger to local residents. "Snow is snow, this is water that has crystallized," he said.
This winter is the warmest on record for the Russian capital that has set three temperature highs so far this month. December 6 was the warmest on record for 127 years with temperatures climbing to 9.4 degrees Celsius (48.92 degrees Fahrenheit).
