Friday, 1 July 2011 - Monthly Climate Summary for ACT Monthly Summary - Product code IDCKGC25R0
ACT in June 2011: Below average rainfall for the ACT
- Stations around the ACT recorded below average rainfall for June.
- Maximum and minimum temperatures were about average for June.
Stations around the ACT recorded below average rainfall for June. Canberra Airport recorded just 8.8 mm of rain during June, well below the historical average of 40.4 mm. This is the second consecutive month of below average rainfall at Canberra Airport. The majority of rain fell on the 21st with the passage of a cold front, with 7.8 mm at the Airport and up to 15.2 mm at Tidbinbilla on the 22nd. Tidbinbilla Nature Reserve recorded 28.3mm well below its June average of 65.4mm, while Tuggeranong (Isabella Plains) recorded just 11mm, its lowest June total in its 5 years of operation.
The average maximum temperature at Canberra Airport during June was 13.6 °C, 1.3 °C above the historical average of 12.3 °C. Similarly, Tuggeranong recorded an average maximum temperature of 13.3 °C. In comparison, minimum temperatures at Canberra Airport averaged 0.7 °C during June, which is close to the historical average of 1.0 °C. There were twelve nights below 0 °C during the month, typical for June, with coldest temperatures associated with a high pressure system in the last week of the month, reaching -5.0 °C on the 27th.
These above average maximum temperatures and slightly below average minimum temperatures were associated with generally clear conditions and above average sunshine, which were a result of high pressure systems dominating continental Australia over the June period.
During June the prevailing winds were northwesterly and comprised 43% of 3pm winds, slightly above average for this time of year. Maximum wind gusts at Canberra Airport reached 72km/h and were associated with the passage of a cold front on the morning of the 21st of June. The highest wind gust anywhere in the ACT was 78 km/hr at Mt Ginini on the 15th.
Canberra Airport recorded an average of 5.7 hours of sunshine during June, slightly above the historical average of 5.2 sunshine hours. No thunderstorms were reported in the ACT.
|Extremes in June 2011|
|Hottest day||17.7 °C at Canberra Airport on the 2nd|
|Warmest days on average||
13.6 °C at Canberra Airport|
|Coolest days on average||
2.9 °C at Mount Ginini AWS|
|Coldest day||-0.8 °C at Mount Ginini AWS on the 9th|
|Coldest night||-5.9 °C at Mount Ginini AWS on the 7th|
|Coolest nights on average||
-1.7 °C at Mount Ginini AWS|
|Warmest nights on average||
1.3 °C at Tuggeranong (Isabella Plains) AWS|
|Warmest night||8.1 °C at Tuggeranong (Isabella Plains) AWS on the 14th|
|Warmest on average overall||
7.3 °C at Tuggeranong (Isabella Plains) AWS|
|Coolest on average overall||
0.7 °C at Mount Ginini AWS|
28.3 mm at Tidbinbilla Nature Reserve|
15.2 mm at Tidbinbilla Nature Reserve on the 22nd|
|Highest wind gust||
78 km/h at Mount Ginini AWS on the 15th|
|Summary statistics for June 2011|
|Canberra Airport||13.6||+1.3||17.7||2nd||0.7||-0.3||-5.0||27th||8.8||40.4||v. low||22%|
|Mount Ginini AWS||2.9||8.7||30th||-1.7||-5.9||7th||24.8|
|Tuggeranong (Isabella Plains) AWS||13.4||17.0||2nd||1.3||-4.8||19th||11.0|
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 ACT Monthly Summary 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 10 am on Friday 1 July 2011. 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.