Air temperature

Arctic colds hit the ETR in the first days of May and dominated there for most of the month, although their strength was especially noticeable in the first decade. No such prolonged colds had ever been observed in Central Russia at this time of year. The frosts reached -5…-9° in Central Russia and in the Black Earth and Volga regions, or -4° in the south, and came to the Kaliningrad Region in the west of the country as well. The decade-averaged temperature anomalies reached -4…-7 or lower degrees. In the second decade, the colds persisted (within the decade-averaged temperature anomalies down to -4° or colder), but started to give up already, up to the normal or even above-normal
values in the north-east of the country. At the beginning of the third decade, the abnormal colds in the east and north-east of the ETR still survived, but the weather in the north-west became extremely warm: new temperature maxima were recorded in Karelia as well as in the Vologda and Arkhangelsk Regions, and the thermometer readings would rise to such values that could be measured in July, and not every year for that matter. Yet, much more temperature minima were newly set in the ETR this May, especially, in the first and second decades of the monthFor most days of the month, the weather was colder than usual in the Urals, but predominantly warm rather than cold in the south of Siberia where the colds still reached in thethird decade, with the frosts down to -5° in Altai as well as in the Novosibirsk, Kemerovo, Omsk and Tomsk Regions.
In the Far East, northern territories located in Yakutia and Kolyma where most remarkable: there, the average anomalies of air temperature exceeded +4…8 or more degrees in the first and third decades, and new temperature maxima were set in Yakutia to exceed +30° in some locations.


Air temperature
The air in the ETR was abnormally warm from the first to last days of April. The average temperatures in each decade were 2-6° higher than normal everywhere save for the northern regions, and numerous temperature maxima were recorded all month long in many constituent entities of the Federation. The thermometer readings in the south of the ETR rose above 30° sometimes, while cold weather prevailed in the north only: in the Murmansk and Arkhangelsk Regions, as well as in the Republic of Karelia where unprecedented frosts down to -18° were observed in some places.
The weather in the Urals was cooler than usual for the most part, yet it changed to record-breaking warmth on occasional days, creating new daily temperature maxima in the Chelyabinsk, Sverdlovsk, Orenburg and Kurgan Regions as well as in the Republic of Bashkiria.
Siberia was a territory of multi-vector weather, ranging from rare colds with new air temperature minima in some cases, as in the Krasnoyarsk Territory and the Khanty-Mansi Autonomous District in the second decade, to temperature highs in other cases, as in the same places in the third decade when the average temperature exceeded its normal value by two or more degrees.