UPDATED 1PM: The Bureau of Meteorology has issued a sheep graziers warning and a damaging wind warning for south-eastern parts of the state.
Sheep graziers in the Central Tablelands, Southern Tablelands, South West Slopes and Snowy Mountains forecast districts are warned that cold temperatures, showers and strong westerly winds are expected during Tuesday and Wednesday.
Areas likely to be affected include the Southern Tablelands and Snowy Mountains forecast districts and parts of the Central Tablelands and South West Slopes forecast districts.
There is a risk of losses of lambs and sheep exposed to these conditions.
People in the Illawarra and parts of the South Coast, Central Tablelands, Southern Tablelands, South West Slopes, Snowy Mountains and Australian Capital Territory forecast districts have been warned of damaging winds.
A cold front crossed southern NSW early on Tuesday morning, with a second cold front forecast to move across southern NSW on Wednesday morning.
Following the passage of the first cold front, winds have temporarily eased across the southeast, however winds are likely to strengthen again this evening with the approach of the second cold front.
Damaging winds, averaging 60 to 70 kilometres an hour with peak gusts in excess of 90km/h, are expected to re-develop for some parts of the southern and central ranges this evening and Wednesday morning.
Elevated areas are most susceptible. Alpine areas above 1800 metres may experience winds around 80km/h with peak gusts around 120km/h.
Wind gusts around 90km/h are also possible for coastal parts of the Illawarra early Wednesday morning.
Blizzards are possible about alpine areas above 900 metres this evening and Wednesday morning.
The National Parks Service of NSW recommends that people consider postponing backcountry travel until conditions improve.
Elsewhere and a minor flood warning remains in place for the Lachlan River with minor flooding occurring at Forbes Iron Bridge and Cottons Weir where minor flood peaks are expected later today.
Downstream of Cottons Weir, minor flooding is occurring at Jemalong.
The flood peak from the early July flood passed Euabalong on Thursday, where the river peaked around 6.5 metres (estimated) with minor flooding.
Minor flooding is also expected at Hillston Weir and Booligal.
A minor flood warning is also current for the Murray River upstream of Lake Hume.
In the 24 hours to 9am today rainfall totals of up to 49 millimetres have been recorded in the Upper Murray River catchment.
For Tuesday, rainfall totals of about 5-10mm with higher totals up to 20mm in more elevated areas are forecast for the North East Ranges.
Minor flooding is continuing in the Upper Murray catchment.