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Record warm night for large parts of NSW

Tristan Meyers, Wednesday July 20, 2016 - 14:47 AEST

During the pitter-patter of rain on the roofs, many places across NSW experienced their warmest July night in records.

A tropical air-mass has moved over NSW after dousing QLD with unseasonable rain, bringing thick cloud and warm air. Although it's been noticeably warmer during the days, the night-time temperatures were the most outstanding.

For instance, after a 18.8 degree day yesterday in Canberra, the warmest July day in 41 years, the capital only fell to 11.1C, the warmest July night since records began in 1939.

Astoundingly, the entire Hunter region had their warmest July night on record. Weather stations with reliable climatologies reported seven-to-twelve degrees above the norm for July. Some of the records that have tumbled include Nobbys Head at 17.1 degrees, Cessnock at 16.3 degrees, Tocal at 15.4 degrees and Williamtown at 15.7 degrees.

Similarly, most of the Central Tablelands had their warmest July night, such as Katoomba at 12 degrees, Bathurst at 12.5 degrees, Orange at 12.5 degrees and Oberon at 11 degrees.

The warmth wasn't confined to the east; Tibooburra and Brewarrina recorded back-to-back record warm nights according to the 9am minimum today and yesterday. Respectively, these minimums were 16.2 and 17.6 degrees at Tibooburra and 15.6 and 16 degrees at Brewarrina. In fact, temperatures in the Upper Western have failed to cool below 11 degrees for about 48 hours.

Even if it wasn't record-breaking, last night was still exceptionally warm. In Sydney it only fell to 16.5 degrees, the hottest July night in 74 years, while Bankstown which only dropped to 14 degrees, the warmest July night in 26 years.

Taking into account each station and it's respective climatology, last night NSW was roughly 9 degrees above the norm for this time of year. No station recorded a minimum below their average, and it was as much as 14 degrees above their July nighttime average in Wanaaring.

Warmer temperatures will persist across the days and nights until Friday, when a cold front will bring a brisk and showery cold change. As this front clears the state by early Saturday, cool, westerly winds will usher in a return to temperatures more indicative of winter.

- Weatherzone

© Weatherzone 2016

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