than −10 °C (14 °F). Since February 1987, the coldest month recorded is −8.6 °C (16.5 °F). The warmest year ever recorded was 2014, with an average temperature of 8.1 °C (46.6 °F). The second warmest is 2018, with 8.0 °C (46 °F). Since 1991, Uppsala has recorded 15 years with an average temperature of 7 °C (44.6 °F) or warmer. The coldest year ever recorded was 1867, with an average temperature of 2.5 °C (36.5 °F). 1987 was the last year Uppsala recorded a year with an average temperature below 5 °C (41 °F). The climate table below presents weather data from 1981–2010. According to ongoing measurements, the temperature has increased during 1981–2010 as compared with the 1951–1980 series. This increase is on an annual basis around 0.9 °C. Warming is most pronounced during the winter and spring. January, February, and March have had the most pronouncing increase in temperature, with each month increasing 1.5 °C or more. The only month that did not get warmer is June, which got 0.3 °C colder. During the 20th century, Uppsala has warmed drastically, especially the winter. If compared to the period 1861–1890, the annual increase in temperature is 1.8 °C. March is the month with the biggest increase, where the temperature has increased more than 3 °C since the latter parts of the 19th century. Winter normally arrives in late November, and lasts until the middle of March when spring arrives. Summer usually arrives in the middle of May, and lasts until late September when autumn arrives. Precipitation is most common between June and November, in all these months it falls 50 mm (2.0 in) or more on average. August receives most precipitation with 74 mm (2.9 in). Between January and May precipitation levels fall a bit, with all months receiving less than 40 mm (1.6 in) on average. Annual precipitation is 576 mm (22.6 in). Rainfall can occur all year round, although it is less common in January and February. Snowfall mainly occurs between November and March. Snowfall in October and April can happen from time to time, but not every year. During the night between 30 April and 1 May 2014 it fell approximately 15 cm (5.9 in) of snow in Uppsala, the first recorded snowfall in May since 1981. Uppsala has an annual average snow cover around 100 days. Economy Uppsala has economic development in many sectors. Today