Cameron Cox, 22, was killed on his family's property, about 3pm on Tuesday.

Mr Cox's father, Bocoble Merino stud breeder Malcolm, sister Bec and grandparents Bruce and Gloria, who live on the property, were alongside him fighting the fire.

Some of those present were also members of the Rural Fire Service who immediately performed CPR on Mr Cox, a NSW Police spokeswoman said.

However, he died almost instantly from the bolt of lightning.

Dubbo MP Troy Grant said Mr Cox was a popular member of the community.

"In the cruellest of acts by Mother Nature the popular 22 year old was taken from us with a lightning strike as he battled the elements during a lightning storm that caused havoc across the region and State," he said in a statement on Wednesday.

"My thoughts and any support I can offer are with Cameron's family."

He said Mr Cox's girlfriend, merino stud manager and shearer Georgia Walter, was comforting the family.

Mr Cox's mother, Jo, shared a photo of her son on Facebook and captioned it: "My beautiful, perfect boy".

It prompted an outpouring of grief from friends who praised his efforts to save the family's livestock.

"Rest in peace Cameron taken way too young but a true hero," one wrote.

“Mudgee Touch sends their prayers and condolences to the Cox family during this tragic time.”

“RIP Coxy. A talent taken way too soon. A true leader and a top bloke. Condolences to the Cox family and partner Georgia.”

“A great young man and sportsman taken too early.”

"What a hero he was for doing what he did at no thought of the danger to himself," another wrote.

The Mudgee cricketing community expressed their shock at his death.

"You just never think something like that is going to happen, do you?" Mitchell Cricket Council president Mark Frecklington.

Mr Cox played both junior and open representative cricket and captained Mudgee's colts team.

In one memorable innings, he belted 12 fours and 10 sixes in his knock of 192 to lead Mudgee to the MCC under 21s grand final in 2014.

It was an innings that stood out for Frecklington.

“I wasn’t umpiring but I was there, and Cameron blasted the ball everywhere. That innings sticks in my mind,” Frecklington added.

Mudgee and District Senior Cricket released a statement saying – “Mudgee Senior Cricket and Golf Club 1st grade team lost a young, highly valued and respected member and player.”

“His achievements in local and representative cricket elevated him to one of the greats of the Mid Western region even at this early age.”

“His contribution and involvement in our club was an inspiration to all he touched, he set a standard to which all who played with and against him aspired to achieve.”

The local and wider community continue to express their deep sadness and support for the Cox family.