Parts of the Upper Western have shivered through their coldest night since last winter. Bourke and Tibooburra chilled to two and four degrees respectively more than three degrees below average and the coldest since last August. Nearby, Cobar dropped to two degrees, which was its coldest morning since October. A high pressure ridge has built over the state in the wake of a front and trough that moved through over the weekend. This scenario, which saw clear skies and light winds combining with a lingering cool airmass, led to the coldest night of the year for parts of the Upper Western. The next few nights will remain cool, dropping to around five degrees, however the coldest airmass has exited the region so temperatures are not likely to drop as far as those this morning. This run of cooler mornings will end on Friday when a trough moves across the state bringing the chance of some light showers.