"Spring is very similar to the season of autumn where you get these low pressure systems and it can make the patterns a little unpredictable."
"This season's weather pattern does contrast quite a lot compared to last year. We had a very calm spring last year."
On Thursday, Wairoa reached 25C, while Napier reached close to 23C.
McInnes said the weekend highs wouldn't stretch that far as there was a slight southerly lingering in the air.
He said despite the slightly sodden soil from last week's heavy weather event, Hawke's Bay is in for a "very good weekend".
"Saturday and Sunday is looking great, it's not until Monday that we've got something slightly more ominous.
"It could be cooler due to that southerly flick, it won't be windy, but it will be a wee bit cooler. It will be about 17C on Saturday, 20C Sunday and then 21C for Monday.
"So Hawke's Bay will be sitting quite comfortably in those high teens and low 20s which is a nice result."
McInnes said although we're not in the high temperatures yet, it was time to whack out the sunscreen.
"Although it's not going to be really hot, you come inside at the end of the day and realise that you've got a few red patches on your face and you think-oh it's that time of the year again."
"Hawke's Bay, you got a bloody good weekend ahead," he said.