Category Archives: Season Weather

Summer 2012-13 hot in parts

Posted in Manilla NSW, Season Weather by

Weather log summer 2012-13Summer was marked by a heat wave in January, similar to that in November 2009. It was not quite so hot, except that the hottest day set a 21st century record of 43.2°. The season also began very hot, but there were other times that were very cool, especially in February.

Twelve days had exceptionally low humidity, below 10%, with a record low value of 4% on 11th January.
There were 22 rain days, which is normal.

In contrast to the very low temperatures last summer, this summer’s temperatures were normal. At 37% cloudy mornings, this summer was a bit cloudier than normal (31%). Morning dew points set a new summer record low of 12.2°, beating the record set last year.
The rainfall total of 260.6 mm beats the average of 228 mm. It is in the 65th percentile.Climate summer 2012-13.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

Droughty Spring 2012

Posted in Manilla NSW, Season Weather by

Weather log Spring 2012.Temperatures rose as normal this spring, apart from a quick rise in the last week and a cold spell in the second week of October. In the cold spell, one day failed to reach 14°! Rain fell nearly every week, but never more than 15 mm in a day.

After last spring’s record-breaking 432 mm rainfall, this spring was about as droughty as spring 2002. The rainfall total, 81 mm, was a bit higher than in spring 2002 (66 mm) and the percent of cloudy mornings higher (25% vs. 19%), but the dew point (humidity) was much lower (3.7° vs. 5.4°) and the daily temperature range was higher (17.9° vs. 17.1°).
Showers in the last days lifted the total rainfall (81 mm) to the 10th percentile for springs.Climate spring 2012.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

Winter 2012: very dry air

Posted in Manilla NSW, Season Weather by

Weather log winter 2012

There were two spells of cloudy very wet weather with warm nights, one in the first week of June and one in the second week of July. By contrast, the first week of August was sunny, but with cool days and very cold nights.

Early valley fogs were common in June and July. The total number of frosts (45) was normal, as was the number of severe frosts below minus two degrees (8).
Like last winter, this winter had normal air temperature. Unlike last winter, rainfall was not low, nor the skies extremely cloudy.
Humidity, however, was even lower, marked by a mean early-morning Dew Point of 0.7° (2.2° lower than normal), a new winter record for dry air.
Subsoil temperature was a new winter record high value: 17.1°.
There were 16 rain days, which is just below normal. The winter total of 148.2 mm is in the 66th percentile.Climate winter 2012

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

In 2012, Autumn Weather Normal Again

Posted in Manilla NSW, Season Weather by

Weather log autumn 2012.
After the cold, wet summer, autumn weather was normal, like last year. Days were warm in early April, and nights cold in mid-May. Rain was rather light: the four days with more than 10 mm of rain came in late April.
Average air temperatures were close to normal, but the early morning Dew Point was 2.1 degrees down, showing very dry air, as in autumn 2008. The subsoil was very warm.
While the percentage of mornings with more than 4/8 cloud (39%) was lower than in the last two autumns, it is still nearly twice that of autumns in the previous decade, which averaged just 25%.
Rain fell on 16 days (normally 12), but the total rainfall of 87.4 mm is only on the 35th percentile for autumn. Like autumns in 2009 and 2010, it is about 45 mm below the average (133 mm). Nevertheless, an enormous amount of rain fell in spring, summer, and autumn taken together: 852 mm! Only 1956 and 1890 had more rain in those three seasons: 1012 mm and 939 mm.Climate autumn 2012

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

2011-12 Summer Cold and Wet

Posted in Manilla NSW, Season Weather by

Weather log summer 2011-12.In the whole of this summer, only 3 days went over 35° (usually 23) and only 5 nights went over 20° (usually 19).

The smoothed curves of temperature reached up as high as normal only twice. In early January both days and nights were normal. Later, with persistent rain around the 1st of February, nights warmed to normal, but days were extremely cold.
All the mean daily temperatures were the lowest in 13 summers: maximum 28.9°, mean 22.2°, and minimum 15.4°. Summer ’07-’08 had been just slightly warmer.
Daily temperature range this summer (13.5°) was very narrow, as in ’07-’08 and ’10-’11; all wet summers with very cloudy skies. Strangely, this cloudy wet summer had very low humidity, with morning Dew Point (12.7°) the lowest on this record.
While this was a very wet summer, at 333 mm, it was only the 19th wettest (86th percentile), and not much wetter than summers 4, 6, and 8 years ago.Climate summer 2011-12.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.