Tag Archives: normal

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.

 

Extremely Cloudy Autumn 2010

Posted in Manilla NSW, Season Weather by

Weather log autumn 2010

There were dry spells in mid-March, mid-April and early May. Each had very low humidity and mainly sunny weather. The first two had very warm days, but the third had cold nights. The final week brought one third of the season’s rain, with overcast skies, very high humidity, and very warm nights.
In all, there were 16 rain days, totalling 82.0 mm. No rain day exceeded 10 mm.
The subsoil temperature (750 mm depth) fell as is normal for autumn in Manilla, pausing for a few days after each peak in air temperature. By the end of the season, the subsoil was as warm as the air during the heat of the day.

This year, each of the months March, April and May was the cloudiest in the 11 year record. As a result, this autumn (45%) was also the cloudiest. Of 92 mornings, 41 were cloudy (>4/8 cloud): nearly twice the usual number of 23. The previous highest (last year) had only 30 cloudy mornings.
Due to the cloud, the daily temperature range (14.9°) was a degree narrower than usual. As the mean temperature was rather high, the result was a daily minimum temperature a degree above normal. Other temperatures, and the Dew Point, were near normal.
The total rainfall of 82 mm is again on the 30th percentile for autumn. It is 31 mm below the autumn median rainfall (113 mm).

Climate autumn 2010

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.

February 2010: two rainy spells

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log February 2010

While last February was very hot then very cold, this February had no such weather. The only cool day was the 15th, at 25.6°.
Rain came in two short spells, totalling 55 mm in eight rain days (usually seven).

 Comparing February monthsClimate February 2010

This month’s average readings were normal. There were a few more cloudy mornings than usual, and the daily temperature range (13.3°) was down by one degree.
The rainfall total (55.0 mm) was in the 55th percentile for the month; above the February median (middle value) of 46 mm, but below the long-term February average of 67 mm. Rainfall totals for groups of months remain fairly high. The greatest rainfall shortage is the 12-month total (456 mm), which is in the 13th percentile.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperature and other data are from 3 Monash Street, Manilla.

 

Normal weather in January 2010

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log January 2010

Cool, cloudy, rainy, humid weather at New Year soon gave way to warm sunny, humid weather. On the 19th temperatures and humidity fell very low, but the next days were hot. Storms marked the final week.
Nine rain days yielded 59.0 mm, with 19.8 mm registered on the 2nd.

“Normal Temperature”

Each 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 January graph, the highest values are marked with a double “X”. Summer heat is due to the sun, which can give most heat on the 21st of December (the summer solstice). On that day the sun is highest and shines the longest. However, it takes many days for the air to warm up. On average, the hottest day in Manilla comes 30 days later (January 20th) and the hottest night 41 days later (January 31st). (See the monthly weather report for July 2010 for the lowest normal temperatures of the year.) These relationships are shown on a graph here.

 Comparing January monthsClimate January 2010

All average values except rainfall are near normal for the month.
The rainfall total of 59.0 mm is in the 40th percentile, rather lower than the median for January (75 mm). Most totals for more than one month are still good. Even the 9-month total (now 339 mm) has risen to the 15th percentile.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperature and other data are from 3 Monash Street, Manilla.

 

Parched December 2009 went soggy

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log December 2009

December began dry, very warm, and almost cloudless. In all, there were fourteen days over 35°: remarkable except that it had happened in November too! Plants began dying from lack of rain and low humidity. By the 19th there had been 39 days without 5 mm of rain. The Dew Point on the 12th (-1.1°) was the lowest for a December morning.
Within a week, the sky became overcast, the days cool, and the humidity extreme: the Dew Point from the 27th on was near or above 20°. The hills were often hidden in cloud or rain. The highest rainfall reading (44.6 mm) is a total of several rain days. Heavy rain fell during Sunday the 27th.

 Comparing December months

Climate December 2009

The mean maximum temperature (33.1°) is not as high as in December 2005 (33.7°), but the mean mean (25.9°) and mean minimum (18.6°) are the highest for the decade. All are two degrees warmer than normal, but not extreme as in November.
At 52% cloudy mornings this month was very cloudy, but not as cloudy as December 2007 (58%). The mean morning Dew Point, 12.6°, was normal.
The rainfall total of 75.6 mm is in the 55th percentile, just above the median for December. Most totals for more than one month are quite good. Shortages affect the 6-, 9-, and 12-month totals, but even the 9-month total (now 334 mm) is no longer a serious shortage: it is in the 13th percentile. A shortage in the 10-year rainfall total (15th percentile) may be keeping river base-flows and deep water tables down.

The year 2009

The year 2009 was dry, with only 495 mm of rain. That is on the 16th percentile, meaning one year in six has been drier. It followed two wet years, 2007 with 741 mm (68th percentile) and 2008 with 720 mm (64th percentile).

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Temperature and other data are from 3 Monash Street, Manilla.