Stockholm, with a February mean of ?3 �C (26.6 �F), has a hemiboreal humid continental climate (K�ppen Dfb). Due to the city's high northerly latitude, daylight varies widely from more than 18 hours around midsummer, to only around 6 hours in late December. Despite its northern location, Stockholm has relatively mild weather compared to other locations at similar latitude, or even farther south.
Summers average daytime high temperatures of 20�22 �C (68�72 �F) and lows of around 13 �C (55 �F), but temperatures can reach 30 �C(86 �F) on some days. Winters are sometimes snowy with average temperatures ranging from -5 to 1 �C (23 to 34 �F), and sometimes drop below ?15 �C (5 �F). Spring and autumn are generally cool to mild.
The climate table below presents weather data from the years 1961�1990. According to ongoing measurements, the temperature has increased during the years 1991�2009 as compared with the last series. This increase is on annual basis around 1.0 �C (roughly 1.8 �F). Warming is most pronounced during the winter months, with an increase of more than 2.0 �C (around a 3.6�4 �F increase) in January.
The highest temperature ever recorded in Stockholm was 36 �C (97 �F) on 3 July 1811; the lowest was ?31 �C (?24 �F) on 20 January 1814. However, the temperature has not dropped to below ?25.1 �C (?13.2 �F) since 10 January 1987.
Annual precipitation is 539 mm (21.2 in) with around 170 wet days and light to moderate rainfall throughout the year. Snowfall occurs mainly from December through March with some very snow-rich winters, while others are milder with more rain than snow
