Thursday, 1 July 2010 - Monthly Climate Summary for ACT Monthly Summary - Product code IDCKGC25R0
ACT Monthly Summary in June 2010:
Sunny days and cool nights for the ACT
- Sunny, with below average rainfall for the ACT.
- Warmer days, but cooler nights.
Canberra recorded a total of 24.8mm of rainfall in June 2010. This is below the historical average of 40.0mm. There were 4 days where the rainfall was greater than 1mm, which is below the average of 5.7 days. Most of the June rainfall was recorded on three days, the 17th, 18th and 26th, each of these as a result of the passage of winter cold fronts. The highest daily rainfall recorded at Canberra was 9.0mm on the 26th. The highest rainfall recorded within the ACT was 28.2mm at Mt Ginini AWS, on the same day.
Canberra recorded an average maximum temperature of 13.0 °C in June, which is 0.8 °C warmer than the historical average. The warmest day was 16.1 °C on the 2nd of the month, with the coolest maximum being 7.7 °C on the 9th. The warmest day recorded in the ACT was at Tuggeranong on the 4th, where they reached 16.8 °C.
Overnight temperatures in Canberra were a little cooler than usual with the average minimum temperature being 0.6 °C (historical average, 1.0 °C). The coldest night recorded at Canberra was -5.0 °C on the 28th. There were 13 days which dropped below freezing, which is equal to the historical average. There were two cold snaps during the month, with 6 consecutive nights dropping below zero between the 11th and the 16th, and another 4 consecutive nights between the 27th and the 30th. These cold conditions were associated with dominant high pressure systems over the area, which brought clear skies and light winds. The coolest June temperatures recorded within the ACT were -7.0 °C at Mt Ginini on the 30th, followed by -6.8 °C at Tuggeranong on the 29th.
The mean temperature at Canberra (average of maximum and minimum temperature), was 6.8 °C, which is slightly above the historical average of 6.6 °C.
Canberra predominantly experienced north to northwesterly winds, with 67% of afternoon observations from these directions (compared to a historical frequency of 44%). The highest winds during the month were recorded on the 17th, associated with the passage of a cold front, with maximum wind gusts up to 72 km/hr recorded at Canberra, and 93 km/hr at Mt Ginini (elev 1760 m).
Canberra averaged 6.3 hours of sunshine during June, which is above the average of 5.2 hours. There were no reports of Thunderstorms at Canberra Airport. Frost was observed on 12 mornings (average is 18), with fogs recorded on 8 mornings (average is 8).
|Extremes in June 2010|
16.8 °C at Tuggeranong (Isabella Plains) AWS on the 4th|
|Warmest days on average||13.3 °C at Tuggeranong (Isabella Plains) AWS|
|Coolest days on average||
3.6 °C at Mount Ginini AWS|
12.5 °C at Tidbinbilla Nature Reserve
|Coldest day||-2.7 °C at Mount Ginini AWS on the 9th|
-7.0 °C at Mount Ginini AWS on the 30th|
-6.7 °C at Tuggeranong (Isabella Plains) AWS on the 29th
|Coolest nights on average||
-1.8 °C at Mount Ginini AWS|
0.6 °C at Canberra Airport
|Warmest nights on average||1.6 °C at Tidbinbilla Nature Reserve|
|Warmest night||10.1 °C at Tuggeranong (Isabella Plains) AWS on the 4th|
73.4 mm at Mount Ginini AWS|
56.4 mm at Tidbinbilla Nature Reserve
28.2 mm at Mount Ginini AWS on the 26th|
22.4 mm at Tuggeranong (Isabella Plains) AWS on the 26th
|Highest wind gust||
93 km/h at Mount Ginini AWS on the 17th|
72 km/h at Canberra Airport on the 17th
|Summary statistics for June 2010|
|Mount Ginini AWS||3.6||7.2||5th||-1.8||-7.0||30th||73.4|
|Tidbinbilla Nature Reserve||12.5||+0.8||15.5||4th||1.6||+0.3||-5.5||29th||56.4||66.0||average||85%|
|Tuggeranong (Isabella Plains) AWS||13.3||16.8||4th||0.6||-6.7||29th||36.0|
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.
This statement has been prepared based on information available at 10 am on Thursday 1 July 2010. 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 decile ranking (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.