Temperatures are likely to nosedive over the mainland on Thursday, as the remnants of the storm that hit Victoria last weekend move over the mainland.

Although overhead conditions might not be as spectacular as our Aussie counterparts, cold temperatures will certainly be felt with a dusting of snow likely on top of the alps.

Southern and eastern areas are likely to feel the worst of the snap with some rain and/or squally showers making conditions very unpleasant with a blustery southerly.

At this stage, the Ellerslie flower show in Christchurch is likely to have a superb day tomorrow but Thursday could be a different story.

This event appears to signal the first change to autumnal weather but fairly short lived, as the weekend is set to be generally fine for many mainlanders.