"In the ranges we can expect the afternoon and evening showers popping up, and some of them could even possibly be thundery.
"You'll notice that we're getting to the time of the year where afternoon convection does pop up and when it does there is the possibility of getting heavy showers."
The forecast for tomorrowwas a few showers in the ranges, but mostly fine with northwesterlies keeping temperatures warm, up to 20 degrees.
Hawke's Bay Federated Farmers president Will Foley said the persistent rain had gone past the point of being welcomed to being "a bit of a nuisance" for local farmers.
"It's unexpected to get this much rain at this time of the year. A bit of rain was welcome but we've probably got more than enough and, at this stage, we've got too much now in terms of making a bit of mess in places, holding up jobs that need to be done and potentially affecting a few crops already in the ground."
He said large lambing flocks many farmers were enjoying this year would be old enough to cope with the wet conditions, but added the weather may impact their growth.
"It is miserable and it will affect them in terms of growth rates. They won't be eating grass, they'll just be sheltering and trying to get away from the weather."
Mr Foley said land damage was also a risk in wet weather, particularly in the ranges, but he hadn't received any reports of such damage.
Hawke's Bay Winegrowers vice-chairman Xan Harding said the wet weather had been good news for grape growers.
"September was pretty dry. I think we only had about quarter of our annual monthly rainfall so this is not a time of the year where it's a concern for the grapes. In the wider scheme of things it's good to have the rain."
Ms Murray said winds should clear by the end of the week, with fine weather forecast for both Saturday and Sunday and a weekend high of 23 degrees.