The meteorological office here said Nagaland was experiencing such a cold wave across the state after a long time.
The cold wave is expected to continue for a few more days, it added.
Though no death has been reported from any part of the state so far, the extreme cold has hampered daily chores across the state.
In Kohima, attendance in offices has been thin with people preferring to stay indoors. Vehicles have also kept off the streets for the past few days because of the extreme weather conditions.
Mount Saramati, the highest peak in Nagaland, on the Indo-Myanmar border and Mount Japfu, 20km from here, are covered with snow.
The Dzukou valley, which is tucked behind the Japfu range and is located about 30km south of Kohima, is also swathed in snow.
A nature lover’s delight, the valley is so thickly covered with snow now that tourists are finding it difficult to visit the place. Come June, however, this white wonder will give way to a carpet of flowers and the frozen streams will start meandering again.
Sources from Aghunato town in Zunheboto district said the tap water was frozen because of the extreme cold and there has been snowfall in and around the town.
Snowfall was also reported from Atoizu town and its surrounding areas under Zunheboto district and Pfutsero subdivision under Phek district.
Environment department here said this was a clear sign of global warming, which should be taken seriously.