Early today a cold southwest change moves onto the lower South Island then pushes northwards to reach the lower North Island overnight.
Northland, Auckland, Waikato & Bay Of Plenty
Sunny spells and a few showers, shower activity may be a little more frequent during the afternoon. The Waikato and Bay Of Plenty are drier overall, still the risk of a shower in the afternoon. West to southwesterly winds.
Western North Island (including Central North Island)
A mix of sun and cloud, chance of a shower, mainly in the evening. Overnight brings a greater risk of showers as a southerly change moves in. Snow will affect higher parts of the desert road by dawn on Wednesday. Westerlies change southerly overnight.
Eastern North Island
A sunny day with light westerlies, overnight a cold southwest change moves into the Wairarapa bringing showers.
Mainly sunny with north to northwesterly winds, an overnight southerly change (becoming strong) brings showers. Snow flurries possible to 500m by dawn on Wednesday.
Marlborough & Nelson
Sunny with light winds, later in the evening a cold southwest change moves in bringing a few showers and snow flurries overnight down to 400m, perhaps 300m at a push.
Sunny then around midday a cold southwesterly change moves into South Canterbury then pushing through the rest of the region during the afternoon. Expect rain with this change, easing a little in the evening / overnight, snow lowers to 200m overnight.
A rain band about Fiordland moves into North Westland during the afternoon. Rain clearing in behind as northwesterlies change south to southeast.
Southland & Otago
Any early morning southwest change brings rain which then eases to showers by midday. Snow to 400m lowers to near sea level overnight.
By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz