Tag Archives: rain

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.

 

April showers in 2009

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log April 2009

For weekly average temperatures, the month began warm, due to warm nights. Normal temperatures followed until, in the last days, cold dry winds arrived from the Southern Ocean, driving temperatures several degrees below normal. At the end, days were 20° and nights 4°, but there were no frosts.
Twelve point four millimetres of rain on the 4th was the first reading over 5 mm in 46 days. Rather more rain followed a humid, overcast spell at Easter: 36.0 mm fell on the 14th. The month’s total was 53.8 mm. There were seven Rain Days, twice as many as usual.

 Comparing April months

Climate April 2009

Of the monthly mean temperatures, only the nights were warmer than normal. The daily temperature range was rather low. This related to a high mean Dew Point and skies more cloudy than usual for April.

April last year was much cooler, and April 2005 much warmer.
The rainfall total (53.8 mm) was in the 76th percentile for the month. This is above the April median (33 mm), and over twenty times the most common April reading (2 mm). The two-month total for March and April (62 mm) is on the 26th percentile: not a serious rainfall shortage, as happened last year (22 mm; 4th percentile).Beyond the two-month figures, totals are still above the median for all periods up to 72 months, except for the 36-month total, which has risen again to the 47th percentile.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Dew point values before August 2005 are from Tamworth Airport 6 am data supplied by the Bureau of Meteorology. Temperature and other data are from 3 Monash Street, Manilla.

 

September 2008 had good rain

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log September 2008

September was a month of changeable weather. It began with normal temperatures returning after a very cold August. Then there was a spell of fine cold weather, with the seven-day mean falling back to 12°, another much warmer fine spell at 18°, and a third at normal temperature (16°).
Between the fine spells there were seven rain days, including very good falls of 19.8 mm on the 1st and 19.0 mm on the 23rd. The total was 66.2 mm.
Despite all the changes, temperatures were not extreme. Only the wet, overcast day on the 6th, reaching 14.3°, was 8° below normal. The hottest day, the 20th, reached 31.5°. Mild frosts on the 10th and 11th did not fall below zero in the screen.
Having twelve mornings completely free of cloud is normal for September. (In 2003, the number was 23!) A milky haze persisted from the 16th to the 22nd, perhaps caused by cypress-pine pollen.

 Comparing September months

Climate September 2008

 

The mean of the daily mean temperatures was normal. The mean of the daily maxima was down, and that of the daily minima was up. This made the mean daily temperature range (15.0°) equal lowest September value of the decade, well below the average of 16.5°.
The humidity (early morning dew point: 5.6°) and percentage of cloudy mornings (30%) were a little higher than usual.
The rainfall total, 66 mm, is on the 82nd percentile for September. This is far above the average (41 mm), but less than the 100 mm of September 2005. Last September, by contrast, had only 2 mm: the third driest on record.
Totals for several months together now show no serious shortages. The total for 2 months (August and September) is in the 52nd percentile, 3 months in the 41st, 4 months in the 47th, 5 months in the 32nd, and 6 months in the 22nd percentile. Rainfall totals for longer periods are normal.

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Dew point values before August 2005 are from Tamworth Airport 6 am data supplied by the Bureau of Meteorology. Temperature and other data are from 3 Monash Street, Manilla.

 

Summer 2007-08 was very cool,cloudy and wet

Posted in Manilla NSW, Season Weather by

Weather log summer 2007-08

The daily weather log

Most summers recently have had one or two days over 40° and nights over 25°. Not this summer! The hottest day reached only 36.3°, and the warmest night 22.1°. Only 37 days went over 30°: half the usual number. Air conditioners may not have had much use!
The 7-day temperature curves show warm spells in the second week of December, and in the second and fourth weeks of January. Temperatures were then normal. The rest of the time they were well below normal.
Daily minimum temperatures were not so low. This made the daily temperature range small, especially during humid spells.
Humid weather (dew point 16°) came with rain in early December, mid-January, and early February. The air was rather dry (dew point 10°) at New Year and in the very last days of summer.
There were 33 rain days (normally 21). The longest dry spells were eight days from the 22nd of January, and nine days from the 20th of February. February the 6th was the wettest day, with 32 mm, and the summer total was high, at 311 mm.
It was a very cloudy summer. More than half the mornings were cloudy (over 4 octas) and many (18) were completely overcast. Only 13 mornings had a sky clear of cloud.

Comparing summer seasons

Mean daily maximum temperature and mean temperature this summer were the lowest in the nine year record. Mean daily minimum temperature was lower in 1999-2000, which has the next coolest mean temperature. While the cool summer of 1999-2000 had a large daily temperature range (15.6°) related to low rainfall, this summer had a very small daily temperature range (13.2°) related to high rainfall and cloud.
The mean daily maximum this summer (29.7°) is 3.3° below the nine-year average. The fall of over 4° from the very high maxima of the last two summers is dramatic.
Humidity was normal for the time of year.
For rainfall, this short record begins with the 15th driest summer (99-00, 125 mm) and includes the 19th wettest summer (05-06, 319 mm). This summer’s rainfall of 311 mm is 84 mm above the long-term summer average of 227 mm. It is on the 83rd percentile.
At 53% cloudy mornings, this summer season is by far the cloudiest of any season in the nine-year record. No others exceeded 41%.

Climate for summer 2007-08

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Dew Point values before August 2005 are from Tamworth Airport 6 am data supplied by the Bureau of Meteorology. Temperatures, including subsoil at 750 mm, and other data are from 3 Monash Street, Manilla.

In 2007: Rainy warm August nights

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log August 2007

Nearly all of the welcome rain this month fell on only four days. Most of it (55 mm) was steady soaking rain through the 20th and 21st. At Tamworth airport there was rain in every hour for 37 hours.

Daily average temperatures were close to normal for August, rising slowly from 11 to 15 degrees. There were wild swings in daily maxima and minima, though. In the first half of the month, with clear skies nearly every morning, days were very warm, mainly above 20 degrees, and nights were cold, hovering around zero. There was seldom frost on the grass because the air was extremely dry. Two days had extreme temperature ranges: over 22 degrees.
That desert-like weather suddenly stopped. The overcast, rainy days from the 16th to the 21st had day-time and night-time temperatures that were almost the same. One night was 10° warmer than normal, and one day was 8.5° cooler than normal.
After the rain, the days slowly warmed up, the nights cooled down, and the skies cleared, until the 30th was desert-like again.

 Comparing August monthsClimate August 2007

Compared with Augusts since 2000, this August had the warmest nights by far: 5.2° compared to an average of 3.2°. This raised the daily mean temperature as well, so that it was also the warmest. However, daily maximum temperatures were not as high as they were in 2002. The August of 2001 was colder than the others; its daily maxima were especially cold.

This month was cloudy (35% mornings >4 octas) and humid (mean morning dew point 3.9°) as well as rainy.  Manilla’s total rainfall of 81 mm this month is in the 90th percentile: the fourteenth wettest August on record. Rainfall totals for more than one month are near normal.

 

Data. Rainfall data is from Manilla Post Office, courtesy of Phil Pinch. Dew point values before August 2005 are from Tamworth Airport 6 am data supplied by the Bureau of Meteorology. Temperature and other data are from 3 Monash Street, Manilla.