June 2013: Extreme Cloud and Rain

The daily weather logWeather log June 2013.

The first weeks were warmer than usual, including a Queen’s Birthday Saturday that reached a pleasant 23°. In contrast, Tuesday the 25th reached only 9.7° making it the fifth coldest day of the century.

There were hardly any sunny mornings in the month, and most were close to overcast. Cloud kept the nights warm, limiting the number of frosts to only eight. The night of the 7th had a minimum of 12.6°, nine degrees above normal.

The wettest of 10 rain days had 38.0 mm, almost as high as a 38.2 mm reading in June 2008.

Comparing June MonthsClimate June 2013.

Extreme cloudiness and rain lead this month’s climate values. Having 73% of mornings with cloud covering more than half the sky makes this the cloudiest month in the 21st century by far. July 2010 and March 2011 reached only 61%. This month’s figure is over twice the June average of 33% cloudy mornings.

With a rainfall total of 98.0 mm, this is the eighth wettest June in 131 years. The wettest was June 1920, with 173 mm. That was the first of a cluster of four extremely wet Junes, ending with June 1931, that were among the ten wettest. Only eight years ago, June 2005 was the sixth wettest on record, at 109 mm.
This month’s rainfall defers any shortage. Among totals for more than one month, the driest is the 34th percentile for the last three months (Total 3-month rain: “only” 116 mm).
The mean daily maximum temperature, 17.3°, is just 0.5° below normal, but the mean daily minimum, 5.7°, is very high, 2.9° above normal (as in 2005, 2008 and 2009). The subsoil remains very warm.

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.

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