September 2017: average temps, rain. Dull

The first month of autumn continued in the same vein as the last month of summer .

The mean temperature finished 14.8C, 0.6C below average and very similar overall to September 2013.Screen Shot 2017-10-02 at 09.34.34

Some 53.5mm of rainfall was recorded, 103% of the 1981-2010 average. Some 114 hours of sunshine were recorded, 81 per cent of average, so on the dull side.

Overall the month was typical for early autumn – though possibly felt more autumnal because it was around 3C cooler than September 2016 and much wetter and duller than that month.

As usual at this time of year there is already much speculation about how cold the coming winter may, or may not, be. Winter has arrived over Siberia and early season snow cover is predicted to increase over the next week. However, the factor of early snow over Siberia being a sign of a cold winter to come in NW Europe is is only one piece of the jigsaw and I have seen it proved wrong a few times.

 

Summary for September 2017
Temperature (°C):
Mean (1 minute)  14.4
Mean (min+max)   14.8
Mean Minimum     10.7
Mean Maximum     18.9
Minimum          5.3 day 21
Maximum          22.7 day 04
Highest Minimum  16.7 day 04
Lowest Maximum   15.2 day 19
Air frosts       0

Rainfall (mm):
Total for month  53.5
Wettest day      16.1 day 27
High rain rate   16.1 day 13
Rain days        19
Dry days         11

Wind (mph):
Highest Gust     28.9 day 12
Average Speed    2.3
Wind Run         1670.8 miles
Gale days        0

Pressure (mb):
Maximum          1022.7 day 01
Minimum          989.1 day 12

Total hours of sunshine        114 (81%)

To view full stats follow this link:http://1drv.ms/1kiTuzv

Screen Shot 2017-10-02 at 09.01.01

 

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