Autumn quietly peters out – a review of November 2021
November proved to be lacking in any dramatic weather, being generally mild, dull and fairly calm. Even when Storm Arwen blew through on 27th, with winds in excess of 90mph and heavy snow for northern England and Scotland, it had relatively little impact for Epping, though it did bring down most of the very late staying autumn foliage.
So, an average November? Not quite – we broke the run of very wet months stretching back to May, and this November in fact proved to be our driest ever November (of our 37 years of records), with just 12.2mm of rain – our average for November is 62.1mm.
Temperature-wise, it was overall close to average, most of the month being fairly mild, but then there was that late cold snap following on from Storm Arwen, and we recorded our first air frosts of the winter on 28th and 29th – the latter night was in fact our 6th coolest minimum temperature for November.
Otherwise, winds were generally light, our strongest gust coming with Storm Arwen on 27th, but not an exceptional wind even then, 29mph being Force 6 on the Beaufort scale.
|Measure||Unit||Minimum||Average||Maximum||Average min||Average max||Total|
|Wind source (most common/highest gust)||Sector||N||N|
|Rain daily accumulation||mm||0.4||6.8||12.2|
|Solar irradiance during daylight||W/m²||90||441||250|
|Sunshine (sunny if irradiance > 300 W/m2)||Hours||0.1||1.0||1.5|