Adelaide Metro & Hills in October 2010

A Mostly Average Month

  • Maximum & Minimum temperatures within 1C of October averages.
  • Average to slightly below average rainfall across the Metro & Hills area.
  • Water storage levels are near capacity in the Mount Lofty Ranges.

Rainfall

Rainfall totals in the Adelaide region were generally below average for October 2010, until the passage of a cold frontal system on the afternoon of the 29th brought the total rainfall for the month from below average up to near average.

Adelaide (Kent Town) rainfall for October 2010 was 29.2mm recorded on 9 days (this rainfall total is from the manually observed 203mm rain gauge making up the long term rainfall record. This may differ from totals on the Bureau's webpage as these may be from the automatic tipping bucket rain gauge). This month's rainfall total is 14.6 mm below the Kent Town average of 43.8mm on 10 days, but closer to the median rainfall for October of 37.6mm. October rainfall total recorded at Adelaide (Kent Town) has not been above average since October 2005 when 88.4mm was recorded. The wettest October on record was in 1980 with 105.0 mm.

Rainfall totals were near average across the metropolitan area, ranging from about 30 mm to 35mm. In the Adelaide Hills rainfall totals were up to about 46mm. The highest reading was 57.4mm at Crafers (Mt

Lofty).

For the first 10 months of 2010, Adelaide (Kent Town) recorded 482.4mm which is 7.1 mm below the long-term average of 489.5 mm. Last year 456.8mm was recorded over the same period. Rainfall totals are generally slightly below average across the Adelaide Hills and Metropolitan area for this year so far

Temperatures

Mean maximum temperatures were within 1C of average across the Adelaide Hills and Metropolitan area. Adelaide only had one day this month that reached 30C on the 11th, where on average three might be expected, and five or more have been experienced in recent Octobers. The coldest day of 13.6C was on the 15th. Only four other colder October days have occurred in the 30 year Adelaide (Kent Town) temperature record.

The mean maximum temperature at Adelaide (Kent Town) was 21.4C which is 0.4C below the long-term October average. This has been the coldest October in Adelaide since 2003, when the mean maximum temperature was 19.0C. The coldest October on record at the Kent Town site, was October 2001 when 18.8C was recorded.

The highest daily maximum temperature in the Adelaide and Adelaide Hills region, of 31.1C was recorded at Adelaide Airport & Parafield Airport, in the northern suburbs on the 11th, whilst the lowest daytime temperature was 7.1C at Mount Lofty, in the Adelaide Hills, on the 15th.

Minimum temperatures were within 0.5C of average this October. The mean minimum temperature at Adelaide (Kent Town) was 11.7C, which is 0.3C above the long-term October average of 11.4C. The lowest daily minimum temperature recorded at Adelaide (Kent Town) was 6.3C on the morning of the 7th.

Across the metropolitan and hills areas the lowest daily minimum temperature of 1.6C was recorded at Parafield Airport on the morning of the 7th, whilst the warmest night was 21.9C at Noarlunga on the 29th.

Further information

Media
(03) 9669 4057
Enquiries

Extremes in October 2010
Hottest day 31.1 °C at Adelaide Airport on the 11th
31.1 °C at Parafield Airport on the 11th
Warmest days on average 22.5 °C at Parafield Airport
Coolest days on average 16.0 °C at Mount Lofty
Coldest day 7.1 °C at Mount Lofty on the 15th
Coldest night 1.6 °C at Parafield Airport on the 7th
Coolest nights on average 7.0 °C at Mount Barker
Warmest nights on average 11.7 °C at Adelaide (Kent Town)
Warmest night 21.9 °C at Noarlunga on the 29th
Wettest overall 57.4 mm at Crafers (Mt Lofty)
Highest wind gust 74 km/h at Edinburgh RAAF on the 15th

Record lowest October temperature
Lowest temperature
in October 2010 (°C)
Previous lowest
for October
Years of
record
Average for
October
Parafield Airport 1.6 on the 7th = 1.6 on the 11th in 2000 54 10.1



Summary statistics for October 2010
Maximum temperatures
for October
(°C)
Minimum temperatures
for October
(°C)
Rainfall
for October
(millimetres)
Mean for
October
2010
Diff
from
average
Highest for
October
2010
Mean for
October
2010
Diff
from
average
Lowest for
October
2010
Total for
October
2010
Average
for
October
Rank of
October
2010
Fraction of
October
average
Adelaide (Kent Town) 21.4 -0.4 30.0 11th 11.7 +0.3 6.3 7th 29.2 43.8 average 67%
Adelaide Airport 20.7 -0.3 31.1 11th 10.6 0.0 6.0 7th 34.0 38.1 average 89%
Edinburgh RAAF 21.7 -0.3 30.7 28th 9.6 -0.4 3.1 7th 35.4 39.7 average 89%
Mount Barker 20.2 +0.8 27.2 11th 7.0 -0.2 2.0 25th 43.8 66.9 low 65%
Mount Lofty 16.0   23.7 11th 7.7   2.5 16th 46.0
Noarlunga 20.5   30.1 28th 11.3   6.9 7th 36.6
Parafield Airport 22.5 +0.8 31.1 11th 9.7 -0.4 1.6 7th 31.0 42.3 average 73%

Notes

A Monthly Climate Summary is prepared to list the main features of the weather in Adelaide Metro & Hills 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 Monday 1 November 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.

Further information

Media
(03) 9669 4057
Enquiries