Winter night in Moscow Russia

The Russian winter has been cited as a factor which significantly contributed to military failures of several invasions of Russia. Common nicknames to this concept are General Frost, General Winter and General Snow. Significance of these factors has been criticized.

The average and minimum temperatures differ among Russian regions. Winter is most severe in hinterland Yakutia (where no major armed conflicts have occurred to date), with the lowest temperature about −65°C (-85°F). In European Russia (west of the Ural mountains), where most battles were fought, the average winter temperature is rarely below −20°C (-4°F), but varies greatly: for example, temperatures in the winter of 2005/2006 fell to −20°C (-4°F) or −30°C (-22°F) in Moscow. . But most recent winters in central Russia have been unusually warm. A New Year's Day without snow in Moscow and temperatures up to 10°C (50°F) in the middle of winter are no longer rare.

One factor in Russia's temperature is its continental climate. The other is the geography of Russia: it is as far north as Canada, but has little open inland water to store the sun's energy. For example, in the Altai region in August, the temperature is above 20°C (68°F) during the day, but at night can fall as low as −5°C (23°F).

Source:-Wikipedia