MORE chilly mornings are on the way for NSW as a cold air mass spreads over the state in the wake of two cold fronts.
The first proper cold snap so far this season sent temperatures plummeting across NSW during last weekend and early this week.
The mercury dropped as low as minus 5.5 degree Celsius in Perisher Valley on Tuesday morning, with Mudgee, Glen Innes and Bathurst also experiencing their first mornings below zero so far this year.
Since then, warmer air has returned to NSW thanks to a stream of northwesterly winds that developed ahead of the approaching cold fronts.
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Last Thursday, maximum temperatures were pushing into the mid to high twenties across a large area of northern, central and eastern NSW.
But this warmth was short-lived.
The passage of two cold fronts will bring a string of cold mornings and cool, mostly sunny days from today into the start of next week.
While the next few mornings won't be as cold as they were earlier in the week, they will be a few degrees below-average for April.
Frost will mainly be confined to the southern and central ranges and tablelands this time around.
While most of NSW will be dry over the next several days, a low pressure trough associated with one of the passing cold fronts will produce a burst of showers in northeast NSW on Saturday.
See-sawing temperatures and brief periods of rainfall are typical in NSW at this time of year.
Being the middle month of autumn, April is when we see warm inland air clashing with colder air travelling up from the Southern Ocean.
These contrasting air masses can cause large temperature ranges in the space of a few days.
The lowest April temperature on record in NSW was minus 13C at Charlotte Pass in 2009.
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