As can be seen in the image below temperatures for the eastern South Island are colder than normal, this is due to a southerly airflow. Looking warmer in the west and for the upper North Island, southerlies move into the lower North Island around midday bringing a drop in temperatures.
The warmest day time highs will likely go to Hawkes Bay and Gisbone getting into the early twenties but these highs will cool from mid afternoon as southerlies move in. The coldest day time highs will be about Southland and Otago around 9 to 10 degrees.
Temperatures dropping overnight with the lower South Island in particular looking at frosty conditions, possibly getting down to -3 degrees about some inland parts of Southland / Otago.
Frosty conditions will be a concern for Marlborough / Nelson and inland North Island areas south of southern Auckland overnight Thursday into Friday morning.
For Max & Min NZ Temperature maps for the next few days and nights ahead, please visit our new maps page: https://www.weatherwatch.co.nz/maps-radars/temperature/temperature
By Weather Analyst Aaron Wilkinson – WeatherWatch.co.nz