A support group is asking farmers to keep an eye on their neighbours as a cold snap continues to cause havoc.

After a tinder-dry summer, a bitterly cold southerly blast ripped through the country, bringing snow to the lower South Island, including Southland and Otago.

The change in conditions is causing headaches for farmers, as the dry summer meant they struggled to get a good deal of feed ready for winter.

Rural Support Otago, coordinator David Mellish says the best way to keep the black dog at bay is to look out for each other.

"We've got a network of farmers set up and they are keeping an eye out for their neighbours and their communities. We've been working hard to make smaller rural communities more resilient."

Mellish believes they need to take a 'wait and see' approach before stressing about the rest of autumn and winter.

"It's not expected to last too long and hopefully it won't last too long. The weather warnings were out early for this cold snap."

Metservice meteorologist, Rebekah LeBar says there will be a ridge of high pressure over the country in the coming days, but it will only provide a brief break.

"Although it looks like towards the end of the week, going into the weekend, there's another trough coming. It's not going to be quite as cold, but it's still going to bring a return of wintry showers and cooler temperatures."

LeBar doesn't believe the snow will stick around for too long.