Significant rainfall is expected across the state with a high potential of thunderstorms, according to weather forecasters.

Hilltops and Yass SES commander Kurt Bailey said unit volunteers will meet in Yass to discuss their capabilities and create a plan of attack should they be required.

"At the moment it looks like thunderstorms at the end of the week. The weather is definitely changing we're just unsure of the severity at this stage. We'll get some information from state control and BOM [Bureau of Meteorology] later in the week," Kurt Bailey said.

He's asking residents across the Hilltops including Young, Harden and Boorowa to secure trampolines and loose items in backyards, and clean gutters following a long dry spell.

The debrief has been organised as SES volunteers from Hilltops and Yass have been supporting the Rural Fire Service out of Queanbeyan control centre.

Six people per day from the region's units have been travelling down.

"We've been supporting in a wide range of areas. We've been in the comms [communication] room on radios and taking phone calls, in logistics teams at Braidwood making sure everyone has everything they need, and chainsaw teams at Nerriga," Mr Bailey said.

"It's having a drain on us, hopefully it comes to an end soon.

"We're getting together tomorrow [Tuesday] night to debrief and discuss our capabilities. Supporting the RFS has been our main tasking for awhile now, so we'll see how we all are and come up with a plan of attack."

Young's SES unit controller Todd Richens spent the weekend at Nerriga as part of a chainsaw team, while Harden's unit controller Malcolm Edwards has been heavily involved in the SES's support.

SES were tasked to a few jobs, mainly trees down over roads, across the Young area over the weekend due to high winds.

Possible storms are predicted for Young from Wednesday to Sunday.