Clear skies and light winds are forecast for the Whanganui region this weekend with some cloudy weather arriving late on Sunday.
Temperatures are expected to reach highs of 24C on Saturday and 26C on Sunday.
MetService meteorologist Ashlee Parkes said overnight temperatures will be milder as well.
"After a 6C overnight low on Friday, the weekend nights will be warmer with a 12C low on Saturday night and a 15C low on Sunday," she said.
Parkes said the ridge of high pressure that has been lingering over most of the country had been causing lower temperatures.