MetService says a cooler than usual November could be on the way, and growers are being warned to watch for late season frosts.
Meteorologist Georgina Griffiths said a few unusually cold mornings were forecast for inland areas of both Islands next week.
She said growers would need to keep up to date with the temperature forecasts.
November was a month in which afternoon temperatures were usually rising, and the weather was settled, but this year there would not be the warmth and barbecue weather like last year, she said.
