The Canberra region will experience a very wet weekend, with up to 70 millimetres expected to fall over the next three days.
More than 19 millimetres of rain fell at Canberra Airport in the 24 hours to 9am on Saturday, with a sheep graziers' warning issued for the ACT early on Saturday morning.
The Emergency Services Agency on Friday warned Canberrans to prepare for heavy rainfall at the weekend.
"The community is encouraged to prepare now to minimise damage by ensuring all gutters are clear," the agency said in a statement.
"For those with existing damage from recent storm events, please be sure to tarp any areas where water may leak through."
It was a cold start to the weekend on Friday, not quite reaching double digits, at 9 degrees. It dropped to 7.3 degrees on Saturday morning, with an expected top of 13 degrees forecast.
Bureau of Meteorology duty forecaster Helen Kirkup on Friday said the Canberra region could expect up to 30 millimetres of rain on Saturday.
"In the north west of NSW we've seen around 20 millimetres already, in places that rarely see rainfall," she said.
"We could see higher rainfall and particularly up on the Brindabellas we could see a lot more, it gets enhanced as it comes up the ranges."
A dusting of snow could also be expected for the Brindabellas as the snow level drops to 1000 metres.
"The air mass isn't as cold as what gave Canberra a few snowflakes earlier in the week, it's a warm, windy air mass so it's only those higher places that we'll see snow falling," Ms Kirkup said.
The Bureau forecast heavy rainfall to continue throughout Sunday and possibly into early Monday along the South Coast. The Bureau forecast heavy rainfall could lead to flash flooding and riverine flooding.
Damaging winds west of the Alps are expected to reach more than 90km/h and average between 60 and 70km/h throughout Friday.
Similarly strong winds could hit the coastal fringe of the coast from Saturday.
Thunderstorms along the coast on Saturday could also lead to flash flooding.
Over the weekend a further 10 to 20 millimetres is expected to fall in the Canberra region a day, before it will start to clear on Monday.
Ms Kirkup said a trough forming off the east coast would target rainfall to the NSW South Coast, where a flood watch was in place.
"Moruya and Bega are looking like the areas of most concern," Ms Kirkup said.
Parts of the south coast experienced widespread flooding and damage due to heavy rainfall two weeks ago.