The Western Plains will not catch a break from wild weather this week. After another destructive storm washed across the region last night, and the Bureau of Meteorology is now warning of a heatwave across the state.

Last night's storm moved east through the Western Plains, bringing strong winds and torrential rain Trangie, Warren, Gulargambone, Coonamble, Quambone and Baradine, amongst other regional towns.

A Quambone resident Marge Garnsey says her 96-year-old neighbour had half of his roof blown away in the event.

The home on Haydens Lane's electrical wires are now exposed, and with the addition of last night's heavy downpour inside the house, there is significant risk for the elderly man to continue living there.

Ms Garnsey says after the roof damage, there is also a potential threat of asbestos throughout the house.

The man has resided in the house for over 50 years and refuses to leave.

"At his stage spending one night in this house could be catastrophic," Ms Garnsey says.

Around noon today, they were still waiting on assistance from SES officers.

"Truthfully it might not even be safe for the SES with the electrical issues."

Ms Garnsey said she received 33mm of "extreme torrential rain" between 4 and 6pm at her home on Marthaguy Road, and is being optimistic about the situation.

"The rain was extremely needed, it was nice.

"Just maybe without the destruction."

The Coonamble SES group was called out to a home in Baradine after a section of its roof was blown off in the same storm.

The crew arrived around 8pm and drilled it back into place.

Now, the region is bracing for extreme heat over the next few days, when it is expected to push east. The south of the region is expected to be the hardest hit.

Condobolin and surrounds will feel the heat on Saturday with an estimated high of 43C, while Cobar will be reaching a top of around 41C.

The Bureau of Meteorology advises everyone to try and keep cool this week, by staying inside and away from the heat.