Tag Archives: NSW

Cool, cloudy, wet October 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log October 2010 Manilla

 

October days were very cool: no days went above 30°, when usually seven days do, and the 16th, at 14.2°, was 13° below normal. The following night (the only frost) was 10° below normal. A day earlier, overcast skies brought an extremely narrow daily temperature range (2.3°) on the 15th.
Rain fell on 8 days. The highest reading was 20.4 mm on the 4th.

Comparing October monthsClimate October 2010 Manilla

 

The mean daily maximum temperature (24.2°) was the lowest for October on this 12-year record. The mean daily mean temperature (17.7°) was low, but the mean daily minimum temperature (11.2°) was normal. The mean daily temperature range (13.1°) was a record low value.
Mean subsoil temperature was remarkably low: 17.4° against a 12-year October mean of 19.4°. The month ended with subsoil temperature (then 18.8°) trailing 22 days later than its usual date.
There were more cloudy mornings (58%) than in any October on this record. The mean early morning Dew Point (9.6°) was also high.
The rainfall of 85.4 mm is in the 80th percentile for October, far above the long-term average of 58 mm. Totals for groups of months up to six months are now all above the median, as is the thirty-year total.

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.

Rainy, very cloudy September 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log September 2010 Manilla

 

Like August, September had no extremes. Many days had normal temperatures, especially late in the month, and many others were cool. Nights varied, with two frosts, but most were warm.
Rain fell on 11 days, a September record number for the decade. The highest reading was 22.2 mm on the 10th. A reading of 12.6 mm was due to a brief afternoon shower on the 27th.

Comparing September monthsClimate September 2010 Manilla

 

The mean daily temperature (14.9°) was normal, but days (21.5°) were only 13.3° warmer than nights (8.2°). Usually, September has the highest daily temperature range of the year: 16.9°.
Along with cool days and warm nights, there were more cloudy mornings (57%) than in any September on this record. Very high humidity made the mean early morning Dew Point (7.3°) nearly two degrees higher than normal.
The rainfall of 59.3 mm is in the 76th percentile for September, well above the long-term average of 41 mm. Totals for two, three, and four months are now all above the median. The thirty-year total has now reached the median value, after three years below it.

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.

Cool days in August 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log August 2010 Manilla

August had no extremes. Only four days exceeded 20° (usually thirteen days), and only ten nights were frosty (usually fifteen). The subsoil temperature failed to rise during the month, ending at 13.5°, which is 1.0° cooler than normal.

Rain fell on 13 days, an August record for the decade, but the highest reading was only 10 mm.

Comparing August monthsClimate August 2010 Manilla

The mean daily maximum temperature (26.5°) was the lowest for November on this 12-year record. The mean daily temperature range (12.4°) was (with November 2008) a record low value.

Mean subsoil temperature (20.4°) was the lowest since November 1999. The month ended with subsoil temperature (then 22.2°) trailing only 10 days later than its usual date. It had begun the month 22 days late.
There were more cloudy mornings (53%) than in any November on this record.
The rainfall of 105.4 mm is in the 84th percentile for November, far above the long-term average of 67 mm. Totals for groups of months up to 15 months are now all above the median, as is the thirty-year total.

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.

July 2010 Rain Twice Average

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log July 2010 Manilla

July began cold. The 2nd, with a maximum temperature of 9.1°, was the coldest July day in the record from 1999. The only two colder days were: 8/06/07 (8.8°), and 20/06/07 (8.3°).

Two warm spells followed, marked mainly by nights that were very warm for mid-winter. The minimum on the 12th (11.8°) was 10° above normal, and that on the 31st (13.5°) was 11.3° above normal. Colder nights included twelve mild frosts, the fewest on record.
There were 13 rain days spread through the month. The reading of 17.2 mm on the 29th was topped by 34.2 mm on the 31st.

“Normal Temperature”

Each Manilla monthly weather graph has dashed curves to show the temperatures that are normal for each day of the year. They are harmonic curves matching 10-year averages from March 1999. On this July graph, the lowest values are marked with a double “X”. Winter cold is due to lack of heat from the sun, which yields least heat on the 21st of June (the winter solstice). On that day the sun is lowest and shines the shortest time. However, it takes many days for the air to cool down. On average, the coldest day in Manilla comes 17 days later (July 8th) and the coldest night 22 days later (July 13th). Manilla’s coldest day and night follow the solstice with an unusually short lag time. (See Wikipedia: “Seasonal lag”.)

See the monthly weather report for January 2010 for the highest normal temperatures of the year. These relationships are shown on a graph here.

Comparing July monthsClimate July 2010 Manilla

Due to cloudy nights, the mean daily minimum temperature (4.6°) was by far the highest in the 12-year record for July, and 2.4° above the average. Because the mean maximum temperature was normal (16.9°), the mean average temperature was also high (10.8°). The mean daily temperature range (12.3°) was the narrowest in the July record.

Very high humidity was shown by a mean early morning Dew Point of 4.6°, higher than any since July 1999 (5.7°). The percentage of cloudy mornings (61%) was the highest, not only for July months, but for any month in this record. Nineteen mornings were completely overcast.
The rainfall of 79.8 mm is in the 90th percentile for July: only 12 July months have been wetter. It is close to double the long-term average of 41 mm. As a result, total rainfalls for the last two months and three months are now above the median. No serious rainfall shortages remain. The worst shortages are far from serious: the 15-month and the 9-year totals are both in the 14th percentile.

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.

June 2010 Weather on Average

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log June 2010

Twice the weather cycled from warm, through rain, to sunny and cold. There were 10 frosty mornings, ending with a minimum down to -3.1°. While frostier than last June, which had only 5 frosts, it was less frosty than June 2006 (21 frosts) or June 2000, which had five mornings below -4°.
A modest rainfall reading of 21.8 mm on the 3rd was the highest since December and the third highest in 12 months. Seven rain days brought 42.8 mm for the month.

 Comparing June months

Climate June 2010

All mean temperatures, Dew Point, and cloud were close to their averages. The daily maximum temperature was 0.6° down, and the daily minimum temperature 1.1° up, making the daily temperature range (13.2°) narrower than normal by 1.7°.
The rainfall of 42.8 mm is in the 57th percentile for June. It is close to the long-term average of 44 mm. In 14 months since April 2009 no month has beaten its average. All the same, groups of months show no serious rainfall shortages. Even the 15-month total (573 mm) has now risen to the 10th percentile.

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.