The unstable air mass over the North Island produced some rain, hail and strikes of lightening in Hawke's Bay yesterday.
MetService meteorologist Tom Bell said there was a low to the east which was driving a strong southerly flow over the region bringing these convective showers.
Strong convection causes rain to become more localised, which means some areas are hit harder and faster.
Luckily the weather is set to improve today with a ridge moving onto the country, easing any remaining showers.
"The southerlies should die out and it is looking like a reasonably good day."
However, in typical spring fashion, the rain is forecast to return tomorrow as a front moves over the country.
Mr Bell said if Hawke's Bay was hit it would likely be in the afternoon.
On Friday another low sits over the North Island and gradually moves up the country, which could bring more rain as the wind turns south again.
The forecast for election weekend wasn't looking too stable either with a few showers expected on Saturday and the odd shower on Sunday.
"It will be an improvement but the showers will linger on Saturday as the low is still pulling away but it shouldn't be too bad on Sunday."
The temperatures for the remainder of the week were nothing too extreme with highs of about 15C-17C and lows of 5C-7C.
"There all fairly static really."
Mr Bell said this sort of unsettled and fairly active weather was something they saw a lot during spring.