Heat records for September set at many places in NSW and VIC

September 25, 2017

Last weekend was dominated by the breaking of record high maximum temperatures for September. 61 recording stations in NSW and 35 recording stations in Victoria had their hottest September day on record; some places have had over 120 years of records and few other places had their coldest September morning on record only a week beforehand.

Quite a few other stations broke their previous September record by two degrees. In Victoria Mildura took the prize with a reading of 37.7 as the highest ever September temperature recorded in the State, followed closely by Echuca, 36.0, Swan Hill also 36.0.

In NSW Wilcannia took the State's prize with a reading of 40.5 as the highest ever September temperature, followed by White Cliffs, 40.3 , and then Bourke with 40.0 degrees . No place in NSW has ever recorded 40 degrees during any September in the last 140 years. Walgett's 39.2 broke a September record which had stood since 1882.

The heat records came as no surprise. For many weeks dating back to the last week of July it has been much hotter than normal over the northern area of WA and the NT and many heat records for July and August were set any many places.

It was a matter of time until a low pressure trough extended well north and brought this excessive warmth finally into our regions the last few days. Most places which had their hottest September day on record last weekend previously had their hottest September day in either 1898, 1907, 1919, 1928, 1965, 1980 and 2003.

From these findings I expect further hot weather in our regions about a week after mid October with the temperature reaching 35 in Coonabarabran and around 38 to 40 in the Riverina; and a very hot spell early December, Not much rain is expected before end of October.

The first week of November some heavy falls with thunderstorms are expected in our regions. The summer to be warmer than usual , the heaviest rains during January.

Canberra had it's hottest September day on record with a reading of 30.2. This was the earliest date a 30 degree temperature in Canberra , the previous earliest date was on 9th October 1944.

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