Tag Archives: rainy

May 2011 cloudy, rainy, but not humid

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log May 2011.

May had five rain days (usually only three) but they came very late. The highest rainfall reading, 19.6 mm on the 23rd, ended a 35-day dry spell. Before the rain, the air had become extremely dry. The morning Dew Point on the 17th was -9.3° and the daily minimum temperature on the 15th -2.8°: both were 13-year record low values for May. The daily temperature range reached 24.9° on the 18th.
With the rain came cloudy, cold days. The 30th, with a maximum of only 11.1°, was the coldest May day in this record. It was nearly two degrees below the previous coldest: 12.9° on 29/5/00.

 Comparing May monthsClimate May 2011.

Mean temperatures were a little below average. There were 11 frosts, compared with the usual six.
After sunny April, May was back to the extreme cloudiness of the last three years. The air was not humid at all, however. The mean Dew Point was only slightly higher than in the droughty May of 2006.
The rainfall of 43.2 mm is on the 64th percentile for May, and just above the long-term May average (39.3 mm). May rainfalls have been low (or very low) for a number of years: this was the wettest May since 1998 (74 mm). Rainfall totals for groups of months (up to 360 months) continue to be near normal.

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.

 

Warm February 2011 with a very wet day

Posted in Manilla NSW, Monthly weather by

The daily weather logWeather log February 2011.

Several Mondays and Tuesdays this month were cool, while most other days were warm. Nights in the first week were warm, lifting the seven-day average. Three nights in the last week were very cool, at a time of very dry air.
Rain on the 7th (15.4 mm) ended a three-week dry spell, but really heavy rain was recorded on the 14th. That reading of 74.2 mm was the 29th heaviest daily fall in more than a century.

 Comparing February monthsClimate February 2011.

Mean maximum, mean, and minimum temperatures and mean soil temperature were all about a degree above average. The mean Dew Point was average, and cloudiness high (54%).
The rainfall of 102.6 mm is in the 77th percentile for February, far above the long-term average of 67 mm. Rainfall totals for groups of months are very high: above the 70th percentile for all periods up to 15 months, and above the 90th percentile for periods of 4-, 5-, and 6-months.

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.

 

Cloudy December 2010; cloudy year

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log December 2010

December moved further into the cool, cloudy, humid and wet part of the climate cycle that Dorothea Mackellar called “Flooding Rains”. Nearly all days were cooler than normal, the 19th by as much as 12°. Some nights were also cool, the 21st being 10° below normal.
The highest rainfall reading of 26.4 mm came early in the month. The total of 113.8 mm came in 15 rain days. In 126 years, only six months have had more than 15 rain days. No month ever had more than the 18 rain days of June 1950.

Comparing December months

Climate December 2010

Both the mean daily maximum temperature (28.1°) and the mean daily mean temperature (22.2°) were the lowest for December on this 12-year record. The mean daily temperature range (11.7°) was also a record low value. The mean subsoil temperature (22.7°) was the lowest December value since 1999.
There were 58% cloudy mornings, nearly twice the normal percentage..
The rainfall of 113.8 mm is in the 82nd percentile for December, far above the long-term average of 74 mm. Totals for groups of 2-, 3-, and 4-months are now all above the 90th percentile.

The year 2010

The rainfall for the year was 719 mm. This is well above average, in the 64th percentile, but the years 2004, 2007, and 2008 were just as wet. Most remarkable is that the number of rain days in the year, 112, was the highest ever. The average year has 69 rain days, and the year with the fewest rain days (38) was 1898.
The year was by far the cloudiest in 12 years: half the mornings were cloudy, when normally only one-third of them are. Every month was cloudier than usual.
With the cloud came remarkably even temperatures. Taking average values, the daily maximum temperature (24.6°) was a degree cooler than usual, the daily minimum temperature (11.3°) was a degree warmer than usual, and the daily range of temperature (13.3°) was two degrees narrower than usual.

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.

Spring 2010 cloudy, damp and cool

Posted in Manilla NSW, Season Weather by

Weather log spring 2010

Days this spring were very cool, keeping the seven-day mean maximum curve below normal nearly all the time. Twenty-two mornings were overcast, twice the usual number, and the number of rain days (29) was the highest in twelve springs.

The mean daily maximum temperature (24.1°) was a record low in this data set, more than 4° lower than last year. Similarly, the daily temperature range (12.9°) was unusually narrow, 3.5° narrower than last year. Other temperatures were near normal, except for the record low Subsoil temperature of 17.5°. Cloudy mornings, at 56%, were a record high.
The total spring rainfall of 249 mm is in the 86th percentile. While this is well above the long-term spring average of 166 mm, four of the previous eleven springs were even wetter: 1999, 2000, 2005, and 2008.
Climate spring 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.

November 2010: more cool, cloudy, wet weather

Posted in Manilla NSW, Monthly weather by

The daily weather log

Weather log November 2010 Manilla

As in October, November’s days were very cool: only 5 days went above 30°.
Rain fell on 11 days. The highest reading was 21.0 mm on the 12th.

Comparing November months

Climate November 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.