I have created an interactive chart of the lowest minimum recorded temperature for each year across all 111 stations in the Australian Bureau of Meteorology Australian Climate Observations Reference Network – Surface Air Temperature (ACORN-SAT) station network.

The dataset employs the peer-reviewed and published data analysis techniques and takes advantage of 100 years of digitised observational data to provide a daily record of Australian temperatures since 1910.

The data is comparable through time, making adjustments for historic changes in observing practices and observing locations, which enable climates researchers to better understand long-term changes in monthly and seasonal climate, as well as changes in day-to-day weather, such as the frequency of heat and cold extremes.

 

(Note to visitors viewing this page on their mobile phone, you will only see a non-interactive image of the chart. Please visit this page again from your desktop computer to enable full interactivity)

Observations

  • There are only six stations (out of 111 total stations) represented in this dataset.
Name Years
Inverell 49
Canberra 35
Bathurst 9
Cabramurra 9
Butlers Gorge 6
Alice Springs 2
Total 110

 

  • The two coldest minimum temperatures ever recorded across the ACORN-SAT network were at Inverell on the 12th of July, 1918 (-13°C) and at Butlers Gorge on the 30th June, 1983 (-12.7°C). 
  • The eighteen coldest minimum temperatures ever recorded were prior to 1994.
  • All temperatures -10C or colder were prior to 1994.
  • There appears to be a step change in the minimum coldest annual maximum temperature records around 1990.
  • The average of the recorded temperatures was -9.1°C prior to 1994, and -7.6°C from 1994-present. Data homogenisation effect?
  • Inverell is the coldest place in this dataset with it recording the coldest temperature for the year in 49 out of 110 years. The nations capital, Canberra is not far behind with it recording the coldest temperature in Australia in 35 out of 110 years. 

Desktop users, play around with the interactive chart below. I have written a post here on how to use the interactive functions of the charts. 

Let me know what you see in the charts in the comments below or follow Climate Alarmism on Twitter to join the conversation there. 

 

Fun Fact

Similar to the example of Oodnadatta in the Australias Hottest Days Ever post, a single station, Inverell, takes the honour of having both the minimum and maximum for the dataset.

It was -13.0°C on the 12th July, 1918 and it was -4.6°C on the 31st May, 2019.