There was a heavy rain watch in place for the Manawatū region from 7pm on Friday to 1pm on Saturday.
“It will be occasional showers of fairly heavy rain.”
The rain would start on Friday afternoon with some northeasterlies picking up but into Saturday the rain would start to clear by the evening.
There were also heavy rain warnings for Mt Taranaki and the Kāpiti Coast southwards down to Wellington, Tararua Ranges and Wairarapa.
A strong wind watch was also in place for Whanganui from 7pm on Friday to 7am on Saturday.
Owen said there would be some gale northeasterly winds from Saturday through to the evening.
“Northerly winds will be strong for inland parts of the Whanganui region but not Whanganui city itself.”
The best of the weekend’s weather would be on Sunday and Owen said conditions should settle as the low pressure system moved away.
“It’s just looking like a little bit of cloud on Sunday.”
The highest recorded April temperature for Whanganui Airport was in 2014 at 26.2C.
MetService advised people to keep up to date with the latest forecasts in case changes were made or more areas were added to the heavy rain watches.