autumn are generally cool to mild. The climate table below presents weather data from the years 1991–2020. According to ongoing measurements, the temperature has increased during the years 1991–2020 as compared with the last series, from 1961 to 1990. This increase averages about over all months. Warming is most pronounced during the winter months, with an increase of more than in January. For the 2002–2014 measurements some further increases have been found, although some months such as June have been relatively flat. The highest temperature ever recorded in Stockholm was on 3 July 1811; the lowest was on 20 January 1814. The temperature has not dropped to below since 10 January 1987. The warmest month ever recorded was July 2018 with a mean temperature of which is also the nationwide record. Annual precipitation is with around 170 wet days and light to moderate rainfall throughout the year. The precipitation is not uniformly distributed throughout the year. The second half of the year receives 50% more than the first half. Snowfall occurs mainly from December through March. Snowfall may occasionally occur in late October as well as in April. In Stockholm, the aurora borealis can occasionally be observed. Daylight hours Stockholm's location just south of the 60th parallel north means that the number of daylight hours is relatively small during winter – about six hours – while in June and the first half of July, the nights are relatively short, with about 18 hours of daylight. Around the summer solstice the sun never reaches further below the horizon than 7.3 degrees. This gives the sky a bright blue colour in summer once the sun has set because it does not get any darker than nautical twilight. Also, when looking straight up towards the zenith, few stars are visible after the sun has gone down. This is not to be confused with the midnight sun, which occurs north of the Arctic Circle, around 7 degrees farther north. City governance The Stockholm Municipal Council () is the name of the local assembly. Its 101 councillors are elected concurrently with general elections, held at the same time as the elections to the Riksdag and county councils. The Council convenes twice every month at Stockholm City Hall, and the meetings are open to the public. The matters on which the councillors decide have generally already been drafted and discussed by various boards and committees. Once