Monthly Summary for November and Autumn Report

NOTE.
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NOVEMBER
During the first couple of weeks we experienced a succession of weather fronts crossing the country, on mainly westerly winds, that brought many wet and breezy days. The latter half of November produced predominantly northerly winds, saw temperatures drop and minimal rainfall.
The mean temperature (5.6C) was 1C below the 30-year mean and the coldest since 2010. The warmest November was in 1994 (+3.4C) and in contrast 1985 was the coldest (-2.8C). The warmest day was on the 6th with a maximum of 13.8C and the coldest with an air frost of -4.1C during the early hours of the 26th.
The total rainfall was 65.9mm being 73% of the 30-year mean.The extremes of total rainfall for November show an interesting contrast. The wettest occurred in 2003 (203.5mm) and the driest was 1990 (27.8mm). Although the total rainfall was below the mean there were 12 wet days, classed as equal to or greater than 1mm, with the wettest day on the 3rd when a total of 16.5mm was recorded.
It was the sunniest November over the last five years (111%) which resulted in solar energy at 110% of the mean.

AUTUMN
The mean temperature was 0.2c above the 30-year mean, principally due to a very warm October. The warmest autumn occurred in 2006 (+2.0c) in contrast to the very cold autumn of 1993 (-2.2c).
The total rainfall was 259mm, which is 107% of the 30-year mean. This total was 142mm less than the wettest autumn of 2006.
The diurnal temperatures (range between daily maximum & minimum) for each of the three autumn months make an interesting study. September and October show very little difference over the 30-year period. Although the November minimum diurnal figures saw little change over the thirty years the maximum diurnal range has increased by around 2C .

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