Tuesday, 2 October 2007 - Monthly Climate Summary for Adelaide Metro - Product code IDCKGC13R0
Adelaide Metro in September 2007
Rain Well Below Average, Maximum Temperature Nears Record High.
Summary
Adelaide recorded well below average rainfall for September. Maximum temperatures were 2°C to 3°C above average for the month, whilst the monthly mean minimum temperatures were about 1°C above average.
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Rainfall
Adelaide's rainfall for September 2007 was 24.0 mm, recorded on 11 days. This is 38.9 mm below the average of 62.9 mm on 14 days. Last year, 32.6 mm was recorded in September on 7 days. This is the twenty-sixth driest September in the 169 years of rainfall records taken at the South Australian Regional Office and is the driest September for 20 years. The driest September on record occurred in 1951 when 7.0 mm was recorded.
The total rainfall for the first nine months of 2007 was 375.4 mm on 80 days. Last year 251.8 mm on 73 days was recorded over the same period. The average rainfall for the first nine months is 451.3 mm.
Temperature
The Adelaide Airport has recorded its highest September mean daily maximum temperature of 20.8°C.
The mean maximum temperature recorded at the South Australian Regional Office (Kent Town) for September 2007 was 20.8°C, which is 1.9°C above the average September mean maximum temperature of 18.9°C. This ranks as the fourth highest recorded at the South Australian Regional Office, 1944 is the highest with 21.5°C. The mean September maximum last year was 21.1°C. The hottest maximum temperature recorded in the Adelaide metropolitan area was 31.8°C on the 25th at Edinburgh, whilst the lowest was 14.2°C at Noarlunga on the 11th.
The mean minimum temperature for September 2007 at the South Australian Regional Office (Kent Town) was 10.8°C, which is 1.1°C above the normal September mean minimum of 9.7°C. This ranks as the equal fourth highest recorded at the South Australian Regional Office, 1973 is the highest with 11.1°C. Last September, the mean minimum was 9.8°C. The coldest minimum temperature recorded in the Adelaide metropolitan area was 0.2°C on the 5th at the Parafield Airport, whilst the warmest night was 18.6°C at South Australian Regional Office (Kent Town) on the 23rd.
Some sites had their highest September mean daily maximum temperature on record.
Further information
South Australian Regional OfficeSouth Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au
Extremes
| Hottest day Highest temperature | 31.8°C at Edinburgh RAAF on the 25th |
|---|---|
| Warmest days on average Highest mean daily maximum temperature | 21.6°C at Parafield Airport |
| Coolest days on average Lowest mean daily maximum temperature | 19.9°C at Noarlunga |
| Coldest day Lowest daily maximum temperature | 14.2°C at Noarlunga on the 11th |
| Coldest night Lowest temperature | 0.2°C at Parafield Airport on the 5th |
| Coolest nights on average Lowest mean daily minimum temperature | 9.0°C at Edinburgh RAAF |
| Warmest nights on average Highest mean daily minimum temperature | 10.8°C at Adelaide (Kent Town) |
| Warmest night Highest daily minimum temperature | 18.6°C at Adelaide (Kent Town) on the 23rd |
| Wettest overall Highest total rainfall | 26.0 mm at Edinburgh RAAF |
| Highest wind gust |
78 km/h at Adelaide Airport on the 16th 78 km/h at Adelaide Airport on the 19th |
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Records
| Record highest September mean daily maximum temperature | |||||
|---|---|---|---|---|---|
|
Mean daily maximum temperature for September 2007 (°C) |
Previous highest for September |
Years of record |
Normal for September |
||
| Adelaide Airport | 20.8 | 20.6 | in 2006 | 53 | 18.0 |
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Summaries
| Summary statistics for September 2007 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperatures for September (°C) |
Minimum temperatures for September (°C) |
Rainfall for September (millimetres) |
||||||||||
| Mean for September 2007 |
Diff from normal |
Highest for September 2007 |
Mean for September 2007 |
Diff from normal |
Lowest for September 2007 |
Total for September 2007 |
Normal for September |
Rank of September 2007 |
Fraction of September normal |
|||
| Adelaide | 20.8 | +1.9 | 30.2 | 25th | 10.8 | +1.1 | 5.0 | 2nd | 24.0 | 62.9 | very low | 37% |
| Adelaide Airport | 20.8 | +2.7 | 31.0 | 25th | 10.0 | +1.1 | 1.7 | 5th | 20.8 | 46.5 | low | 45% |
| Edinburgh RAAF | 21.3 | +2.5 | 31.8 | 25th | 9.0 | +1.0 | 0.4 | 5th | 26.0 | 48.1 | low | 54% |
| Noarlunga | 19.9 | 30.5 | 25th | 10.7 | 5.6 | 15th | 25.6 | |||||
| Parafield Airport | 21.6 | +2.9 | 31.0 | 25th | 9.2 | +1.0 | 0.2 | 5th | 23.8 | 44.0 | low | 54% |
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Notes
This statement has been prepared based on information available at 9 am on Tuesday 2 October 2007. Some checks have been made on the data, but it is possible that results will change as new information becomes available.
Normals 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 "normal" 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,
normal in decile 4 to 7, high in decile 8 or 9
and very high is in decile 10).
The Fraction of normal shows how much rain has fallen this time as a
percentage of the long-term mean.
Further information
South Australian Regional OfficeSouth Australian Climate Services Centre
Bureau of Meteorology
Phone (08) 8366 2600
Email climate.sa@bom.gov.au