MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF JUNE 2025
Air temperature
The abnormally warm weather settled in the ETR in May remained there at the beginning of June, with new temperature maxima recorded in the south of the ETR and in the Middle Urals. Such warmth in early June has not been seen in the Urals for more than fifty years. The decade-averaged temperature anomalies were 2-3° in most of the European territory, and up to 4-5° in the Urals. Everything changed radically in the second half of the month, when the Arctic cold hit the Russian Plain. New temperature minima were recorded in some places in Central Russia, and it came to frosts in the Russian North. The anomalies in the second and third decades amounted to -2…-3°.
In Siberia and the Far East, the trends were quite different: in the north, the air temperature was sub-normal almost the entire month, and in the south, the same was observed in some places in the first decade only. Further south in Siberia and in the Far East, the weather was abnormally warm with the decade-averaged temperature anomalies reaching +3-4° or more and new daily temperature maxima recorded again and again. The air heated up to 34-36° in the Omsk, Novosibirsk, Kemerovo and Irkutsk Regions, in the south of the Krasnoyarsk Territory, in the Republic of Tyva and in Trans-Baikal; the thermometers indicated up to 30-35° in Primorye.
Eventually in terms of the monthly averages, the European territory as well as the north of the Far East were in the cold weather zone (negative anomalies of monthly-averaged temperature), whereas the eastern areas of the Volga region, the Urals, the south of Western Siberia, and Primorye were in the warm weather zone (positive anomalies of monthly-averaged temperature).
MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF MAY 2025
Air temperature
Cold weather that came to the ETR at the end of April remained cold in the ETR for the first and second decades of May, with the decade-averaged temperature anomalies reaching -3…-5°. In the Yaroslavl, Moscow, Ryazan, Tver, Tula, Ivanovo and Bryansk Regions, the thermometer columns dropped below zero, and new daily temperature minima were recorded – notably, for several days in a row in some places. Warmth arrived in the third decade only when the decade-averaged temperature anomalies became +2…6° all the way from the Kola Peninsula to the lower reaches of Volga. In the Russian North, new temperature maxima in excess of +25-30° were recorded.
In the Urals, abnormal heat in the first decade changed to normal weather in the second, and to the cold one in the third – with the decade-averaged temperature anomalies down to -2…-3°.
The weather in Siberia was noticeably warmer than usual in the first decade when new air temperature maxima were even measured in the north of the Krasnoyarsk Territory. Abnormal heat in the second decade solely preserved in the north, while the temperatures in the south were approximately normal. In the third decade, cold in the west came along with heat anomalies in the east of the region where the thermometer readings rose to +30-35° in the Krasnoyarsk Territory.