Friday, 1 November 2013 - Monthly Climate Summary for Canberra - Product code IDCKGC15R0
Canberra in October 2013: Warm days, cold nights
- Coldest October night on record, significant frost damage
- Well above average maximum temperatures
- Below average rainfall
Rainfall - Below average rain
Canberra Airport recorded 13.4 mm of rain during October, less than a quarter of the historical average (62.4 mm) and the driest October since 2006; this is the sixth-driest October on record for Canberra. There were only four rain days during the month (average 10 days); most of the rain fell associated with a trough and storms on the 22nd-23rd, with 10.8 mm at the airport and 23.4 mm at Mt Ginini.
Temperature - Warm days, cold nights
Canberra Airport recorded an average maximum temperature of 21.9 °C, 2.5 °C above the historical average and the equal-seventh-warmest October on record. There were 22 days with temperatures above 20 °C (average 13 days), while no days dropped below 15 °C (average 4 days). Temperatures reached 32.1 °C on the 21st, the equal-second-warmest October day on record for Canberra.
In contrast, the average minimum temperature was 3.8 °C, 2.3 °C below the historical average and the second-coldest October on record, following October 2012 (3.4 °C). There were five nights with temperatures of 0 °C or lower, the equal-highest on record (average 1 night). Three of these nights dropped below -2 °C, including the coldest October night on record with -3.4 °C on the 18th; no previous October has recorded more than one night so cold. The combination of earlier unseasonable warmth and accelerated growth with the October frosts resulted in severe damage to vineyards in the ACT.
|Extremes in October 2013|
32.1 °C at Canberra Airport on the 21st|
|Warmest days on average||
22.0 °C at Canberra Airport|
|Coolest days on average||
12.9 °C at Mount Ginini AWS|
5.1 °C at Mount Ginini AWS on the 24th|
-5.0 °C at Mount Ginini AWS on the 14th|
|Coolest nights on average||
1.9 °C at Mount Ginini AWS|
|Warmest nights on average||
4.4 °C at Tuggeranong (Isabella Plains) AWS|
15.5 °C at Canberra Airport on the 23rd|
|Warmest on average overall||
13.1 °C at Tuggeranong (Isabella Plains) AWS|
|Coolest on average overall||
7.4 °C at Mount Ginini AWS|
46.6 mm at Mount Ginini AWS|
22.8 mm at Mount Ginini AWS on the 23rd|
|Highest wind gust||
94 km/h at Mount Ginini AWS on the 1st|
|Summary statistics for October 2013|
|Canberra Airport||21.9||+2.5||32.1||21st||3.8||-2.3||-3.4||18th||13.4||62.4||v low||21%|
|Mount Ginini AWS||12.9||22.0||21st||1.9||-5.0||14th||46.6|
|Tuggeranong (Isabella Plains) AWS||21.8||31.4||21st||4.4||-2.0||18th||12.0|
As of March 2010, the official station for Canberra is 70351 'Canberra Airport'. Averages from the previous site, 70014 Canberra Airport Comparison, are used for comparisons.
A Monthly Climate Summary is prepared to list the main features of the weather in Canberra using the most timely and accurate information available on the date of publication; it will generally not be updated. Later information, including data that has had greater opportunity for quality control, will be presented in the Monthly Weather Review, usually published in the fourth week of the month.
This statement has been prepared based on information available at 9 am on Friday 1 November 2013. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Averages are long-term means based on observations from
all available years of record, which vary widely from site to site.
They are not shown for sites with less than 20 years of record, as they cannot then be calculated reliably.
The median is sometimes more representative than the mean of long-term average rain.
The Rank indicates how rainfall this time compares with the climate record for the site,
based on the
(very low rainfall is in decile 1, low in decile 2 or 3,
average in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of average shows how much rain has fallen this time as a percentage of the long-term mean.
The ACORN-SAT dataset is being used for temperature area averages from December 2012 onwards. The major change from earlier datasets is that the ACORN-SAT dataset commences in 1910, rather than 1950, and hence rankings are calculated using a larger set of years.