Lithuania's climate, which ranges between maritime and continental, is relatively mild.
Average temperatures on the coast are −2.5 °C in January and 16 °C (61 °F) in July. In Vilnius the average temperatures are −6 °C (21 °F) in January and 16 °C (61 °F) in July. During the summer, 20 °C (68 °F) is common during the day while 14 °C (57 °F) is common at night; in the past, temperatures have reached as high as 30 °C (86 °F) or 35 °C (95 °F). Some winters can be very cold. −20 °C (−4 °F) occurs almost every winter. Winter extremes are −34 °C (−29 °F) in coastal areas and −43 °C (−45 °F) in the east of Lithuania.
Rivers of Lithuania are typical lowland rivers: they are slow, they make meanders, the valleys are wide. Because of abundant precipitation, the river net is dense: on the average 0.99 km of rivers flow in 1 km² of the territory.
The current administrative division was created in 1994 and modified in 2000.