MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF NOVEMBER 2025
Air Temperature
The weather in the ETR was abnormally warm almost all November. Average air temperature anomalies were 2-5° or higher in the first decade of the month, and 2-7° or more in the second and third decades. New daily temperature maxima were recorded in the Russian North, Central Russia, the Volga region, the Lower Volga, the Krasnodar and Stavropol Territories, the North Caucasian republics, Crimea, and the Azov region.
In the Urals, the decade-averaged air temperature was close to normal or even slightly less than that in the first decade only, but the extreme warmth which arrived in the region later on resulted in temperature averages 6-9 or more degrees higher than the normal value. The all-time temperature maxima were measured in the Sverdlovsk and Kurgan Regions and in the Khanty-Mansi Autonomous District.
In Siberia, the weather in November was abnormally cold in the north and abnormally warm in the south, with the decade-averaged temperatures 2-6° below normal in the north and about the same value above in the south.
MAIN WEATHER AND CLIMATE TRAITS IN THE NORTHERN HEMISPHERE AS OF OCTOBER 2025
Air Temperature
In the ETR, the average air temperature in the first decade of October was basically normal except for the Russian North where the weather was noticeably warmer than usual. New daily temperature maxima were even recorded in Karelia and in the Astrakhan Region. At the end of the decade, flows of hot air from the Middle East reached North Caucasus where new maxima of warmth were set in some places as well. Conversely, new record-breaking air temperature minima were reported in the Black Earth Region, in some locations of the Volga region and in the north-west of the ETR at the beginning of the month.
In the second decade, cold weather arrived: not bitterly cold, but still bringing frosts to Crimea in particular. Overall, conditions in the ETR during the decade remained close to normal, albeit that with weakly-negative anomalies occupying a large territory.
Abnormal warmth came forth in the ETR in the third decade, when the average temperature became above-normal almost everywhere: in the Central and Volga regions as well as in the north-west, the decade-averaged anomalies of air temperature exceeded +2-3°.
In the Urals and to the east of them, the first decade was cold, with the average temperature 2-4° less than normal over a large area. The weather in the second decade became yet colder, with anomalies reaching -5…-6° in some places. Record-breaking minima of air temperature were recorded in the south of Western Siberia, e.g., in the Omsk and Novosibirsk Regions, in the Republic of Altai, in Cis-Baikal and Trans-Baikal, on Sakhalin and in the Khabarovsk Territory. First 30-35° frosts came to Yakutia and Chukotka.