September 2010 Summary

Temperature [Minimum]:
Night-time temperatures during September 2010 ranged from 6.8 degs C on the night of the 17th/18th - which was the coldest night since the 12th/13th May and the coldest September night since 2007 - to a max of 16.3 on the 10th/11th.
The average night time temperature was 12.45 degs C, the highest September average since 2006.

Temperature [Maximum]:
Daytime temperatures started where night-time's left off, as 16.3 was not only the highest minimum but also the lowest maximum, recorded on both the 24th and 25th.
It was also the lowest September maximum since 2007.
The highest maximum in September 2010 was 23.4 degs C, also recorded on two days - this time the 8th and 11th, and coincidentally the highest since 2007.
The average daytime temperature for the month was 19.47 degs C - again the highest since 2007, and just to underline the comparatively cool Septembers of 2008 and 2009, there were 12 days this September when the temperature exceeded 20 degs C - the most since - 2007!

Rainfall:
102.7 mm of rain fell during September 2010, making it the wettest month since January when 116.9 mm fell. It was also wetter than the last two Septembers added together [97.6 mm], however it was just 4 mm wetter than August.
The wettest 24 hour period of the month was recorded as the 23rd with 29.3 mm, however 18.7 mm of this total actually fell in the last 90 minutes of the 22nd. This was the wettest September 24 hour period at this location [at least since 2007].
There were only 3 other days where 10 mm or more fell, which were the 5th [17mm], 6th [19.1 mm] and 29th [10 mm]. The persistent rain on the 6th was particular unfortunate as Falmouth was the port of call of a visting cruise ship that day.
There were 14 completely dry days - the most since June, but the lowest for September since at least 2007.
There were a few dry spells - the rain that fell on the 5th was the first measurable since August 26th, and from the 9th to the 18th only 1.7 mm of measurable rain fell.

Thunder:
Thunder occurred on the evening of 22nd and morning of 23rd.