The study by the Australian National University (ANU) modelled the worst-case scenario, which could "be avoided with sharp cuts to climate pollution".

It shows Armidale would see an increase of 4.3 degrees, Inverell 4.6 degrees, Glen Innes 4.8 degrees and Tenterfield 4.9 degrees.

READ MORE:

Meanwhile, Tamworth would be an average 4.6 degrees hotter, with 195 days over 30 degrees.

New England would be the third most impacted electorate, based on the largest average temperature increase from the historical baseline of 1960 to 1990 to 2050 projections.

New England independent candidate Adam Blakester said the issue of climate change was "coming through loud and clear" as he travelled around the electorate.

"The seriousness of this shift in climate is that it undermines the viability of life for us as a species," Mr Blakester said.

"That may sound dramatic, but it's not if you look at the impact it will have on food production and how those heat conditions affect the frail and young, and drive up the cost of living."

Mr Blakester said instead of looking for a silver bullet, we should strive for "a silver buckshot".

"We need to tackle this from every angle we can," he said.

"We need a multi-faceted solution, which includes looking at the future of farming, renewable energy and different strategies for our water cycle."

New England MP Barnaby Joyce pointed the finger at larger countries such as the US, China and India.

"There is no policy in Australia that will be able to change the nation's temperature for hotter or colder," Mr Joyce said.

"All we can do is affect our own economy and follow in the dust of other countries."

Mr Joyce said while Australia should meet its climate obligations, it should not come at the expense of jobs, industries or low power bills.

The ANU report said eight of the top 20 electorates impacted by climate change are held by Nationals MPs, including five of the top six.

Australian Conservation Foundation CEO Kelly O'Shanassy said it was disappointing many of the federal electorates found to have the highest increases were represented by MPs who "do little to champion climate action, or worse, deny the established science".

"Barnaby Joyce in particular would do well to stop dismissing established climate science and get on with better representing his communities by championing pollution cuts and programs to help them adapt," Ms O'Shanassy said.