"For today there is a strong wind warning for the likes of central Hawkes Bay and the Wairarapa. Those winds should ease away as we go through today, but it is going to be a case of really keeping a close eye on this southwesterly."
Mr Law said the southwesterly winds would also bring showers to places such as Auckland, and areas along the western side of the North Island, as well as parts of the West Coast and down towards Southland and in towards Otago, over the next couple of days.
"A lot of places like Canterbury, up towards Marlborough, and pretty much the eastern side of the North Island and the Bay of Plenty, it's dry weather, but this is quite cold air that comes through and it's going to be quite windy as well, so it's going to make it feel colder than it is.
"If you are out in the wind, especially down in that southern and eastern corner of the country, be aware there is going to be a fairly significant wind chill factor as we head through Saturday and Sunday.
"We've probably actually seen colder temperatures, but it is that combination of wind and cold temperatures which will make it pretty chilly as well."
Through the weekend and into Sunday, showers should start to ease off for those in the south, making way for finer weather, Mr Law said.
However, showers were still forecast for Auckland, Whangarei and Hamilton on Sunday.
Meanwhile, snow fell on the Desert Rd yesterday, and last night temperatures dropped below freezing.
However, there was no road snowfall warning in place, and currently there was no snow on the Desert Rd, Mr Law said.
"The other things to bear in mind is as we go through the next few nights, as soon as we start to see that wind dropping down and some clearer skies coming through, those cold temperatures could leave quite a frosty start, particularly in those inland areas of the North Island and the South Island."
Today's forecast:
• Whangarei: Occasional showers with fresh westerlies. High 17C Low 12C
• Auckland: Occasional showers. Strengthening westerlies. High 16C Low 13C
• Hamilton: Occasional showers. Strengthening westerlies. High 15C Low 10C
• Tauranga: A few afternoon and evening showers. Strengthening Westerly. High 16C Low 11C
• Wellington: Fine, chance afternoon shower. Strong northwesterly changes southerly evening. High 15C Low 5C
• Christchurch: Mainly fine. A few showers with a strong southwesterly change. High 17C Low -1C
Saturday's forecast:
• Whangarei: Fine spells and the odd shower. Fresh westerlies. High 16C Low 12C
• Auckland: Fine spells and a few showers. Strong westerlies. High 15C Low 13C
• Hamilton: A few showers. Strong westerlies. High 14C Low 10C
• Tauranga: Mainly fine. Strong westerlies. High 15C Low 11C
• Wellington: Fine. Strong northwesterlies. High 13C Low 9C
• Christchurch: Fine with high cloud. Southwesterlies turn northwest. High 13C Low 3C
Sunday's forecast:
• Whangarei: A few showers. Westerlies. High 17C Low 11C
• Auckland: A few showers. Strong westerlies. High 16C Low 12C
• Hamilton: Occasional showers. Strong westerlies easing. High 15C Low 9C
• Tauranga: Mainly fine. Strong westerlies easing. High 16C Low 11C
• Wellington: Mainly fine. Northwesterlies, strong at times. High 15C Low 8C
• Christchurch: Fine, northwesterly. Late southwest brings showers. High 13C Low 2C
(Source: MetService)
