"It will be a similar story as what we have had in the past couple of days," said Kyle Lee of Metservice.
Christchurch and Dunedin will enjoy relatively warm weather with Christchurch nabbing the country's high of 30C and Dunedin reaching 27C.
The December average is for Christchurch is 21C so 30C is high for early December but "not unusual" Lee said.
The weather is a marked improvement on earlier in the week when a storm hit South Auckland and flights into Auckland Airport were delayed.
Refuelling of aircraft was put on hold briefly due to the threat of lightning strikes.
The thunder on Thursday also hit Coromandel, Waikato and Bay of Plenty and lightning strikes cut power to parts of Rotorua.