Officially meteorological winter lasts from December to the end of February. Climatologically the season (cold snowy period) lasts sometimes from November to April. Last winter has been extraordinarily warm.
While November was colder than usual in Estonia (0.4 °C instead of the normal 0.7°), then since December up to now the air temperature has exceeded the long-time average by 6-8°. The mean temperature of the three winter months in 2007/08 was +0.5 °C (norm -5.5°).
In the long time series (since 1866) the winter sequence in Tartu is the following: 2007/08 +0.2 °, 1924/25 -0.3°, 1960/61 -0.4° , 1988/89 -1.0 °C.
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