Locals can expect cooler days from Friday ahead of a "wintry blast" overnight Sunday, with temperatures dropping to single digits.
MetService forecaster Cameron Coutts said Rotorua was in for cooler day temperatures from Friday, but the real "frosty" weather was expected to hit overnight Sunday.
"Today and tomorrow the day temperature will sit around 15C, then drop to about 13C on Friday which isn't cold cold.
"It will be quite windy on Saturday then on Sunday there will be a high across the region bringing some very frosty temperatures.
"People in Rotorua can expect 1C or 2C overnight, even lower - we are now well into the period where we start seeing frosts."