November turned out to be quite ordinary in terms of temperature, but became the driest in a quarter of a century. The average temperature was −0.6, while the norm is −1.2. A positive anomaly of 0.6 is considered to be within the norm. The highest temperature (+9.1) was recorded on November 3 and the lowest (-13.4) on November 30.
© Pavel L Photo and Video | Shutterstock
There were a few important seasonal phenomena:
meteorological winter began on November 11;
permanent snow cover formed on November 23.
Both of these events occurred right on time.
It was precipitation that was unusual. While the norm stands at 58mm, only 18mm of precipitation fell, or 31% of the long-term average rate. As a result, November 2018 became the second driest in the history of VDNKh weather station (since 1948). November 1994 with 4mm of precipitation is considered to be the driest. Almost the same dryness was observed in November 1957 (20mm), 1958 (23mm), 1959 (21mm), and 2014 (21mm).
The largest daily amount of precipitation (5mm) fell in the form of rain on November 4.
Very low relative humidity is indicative of excessive dryness. On November 13, it stood at 28% due to the influence of the Arctic anticyclone. Almost record-high atmospheric pressure (770.2 mmHg) was observed during the same weather session.
Interestingly, despite the extreme dryness, the snow cover was within the norm. Thus, there were 9 snowy days. The average snow depth reached 3cm. The biggest snow cover (6cm) was observed on November 28.