Auckland can expect temperatures around 23C and 24C this weekend with areas of cloud at times.
Hamilton will remain around 24C, and Wellington will get hit by the tail of the front that hits the West Coast, hitting 20C tomorrow before dropping to 17C on Saturday.
However, the showers will be a distant memory by late morning on Sunday.
It will be hot in Christchurch tomorrow with a sweltering 28C. Clark said temperatures usually skyrocket the day before a front arrives. It will then drop dramatically to about 17C and there will be occasional showers on Saturday before it picks up to a high of 19C on Sunday, which should be mostly fine.
Dunedin will be similar, but won't get so hot tomorrow, rather be a solid 20C before also dropping to 17C. Showers clear by the afternoon.