According to the Luxembourg Institute of Science and Technology (LIST), Autumn 2017 was colder and more precipitous in Luxembourg compared to the period 2001-2010.
This year, several low-pressure areas lowered temperatures in Luxembourg to an autumnal level. September was characterised by high wind speeds and heavy rainfall, whilst in early October, the passage of the cold front due to storm "Xavier" caused strong local gusts of wind. The first days of November were relatively warm, although temperatures soon plummeted below freezing, bringing the country's first snowfall at the end of the month.
In the autumn of 2017, the mean temperatures of the season at all evaluated stations of the "Administration of the Services Techniques de l'agriculture" (ASTA) and the Meteolux station were below those of the comparative period 2001 - 2010. The maximum air temperature was measured at 24.6 ° C on 29 September in Remich. However, the average air temperature for autumn 2017 was lowest at 8.1°C at station Schimpach, where the absolute minimum air temperature was also recorded at -6.5°C on 18 November.
The total precipitation this past autumn at the stations of ASTA and Findel Station (MeteoLux) was higher than in the same period of 2001 - 2010. Whilst the Remich station measured 194mm, the lowest rainfall in autumn, Oberkorn the highest autumn value with a precipitation total of 304mm (56% above the comparative period).